title
Flexbox CSS In 20 Minutes

description
This video is 5 years old. Check out the 2022 crash course - https://www.youtube.com/watch?v=3YW65K6LcIA In this quick video we will go over the CSS Flexbox model. This is a quick overview, not an in-depth course. We will look at the basics such as Code - https://jsfiddle.net/bradtraversy/bu0ecodm/1/ display:flex flex order flex-direction justify-content flex-basis align-items

detail
{'title': 'Flexbox CSS In 20 Minutes', 'heatmap': [{'end': 376.619, 'start': 356.218, 'weight': 0.748}, {'end': 441.226, 'start': 403.453, 'weight': 0.91}, {'end': 578.693, 'start': 543.669, 'weight': 0.753}, {'end': 723.583, 'start': 681.746, 'weight': 0.736}], 'summary': 'A 20-minute video covers a crash course on css flexbox for beginners, introducing flexbox layout, its properties, and responsive design concepts, along with live examples and demonstrations of flex properties in small-scale layouts. it also discusses using percentages, flexbox properties, and media queries for responsive design.', 'chapters': [{'end': 45.645, 'segs': [{'end': 45.645, 'src': 'embed', 'start': 0.799, 'weight': 0, 'content': [{'end': 5.023, 'text': 'Hey guys, welcome to a quick crash course on CSS Flexbox.', 'start': 0.799, 'duration': 4.224}, {'end': 8.666, 'text': "So many of you probably know what Flexbox is and that's fine.", 'start': 5.383, 'duration': 3.283}, {'end': 11.208, 'text': 'This will help you brush up on your skills a little bit.', 'start': 9.026, 'duration': 2.182}, {'end': 18.395, 'text': 'But this video is more for beginners that know CSS but want to get into using Flexbox in their projects.', 'start': 11.689, 'duration': 6.706}, {'end': 27.223, 'text': "I did get a request for this and I figured it'd be something a bit different, a nice break from the JavaScript and PHP videos.", 'start': 19.216, 'duration': 8.007}, {'end': 28.956, 'text': 'All right.', 'start': 28.496, 'duration': 0.46}, {'end': 39.822, 'text': 'so before we begin, I just want to mention my website, TraverseyMedia.com, where you can find all of my tutorials, videos, free courses,', 'start': 28.956, 'duration': 10.866}, {'end': 43.884, 'text': 'premium courses by Eduonics, source code and more.', 'start': 39.822, 'duration': 4.062}, {'end': 45.645, 'text': 'All right, so check that out.', 'start': 43.904, 'duration': 1.741}], 'summary': 'Quick crash course on css flexbox for beginners.', 'duration': 44.846, 'max_score': 0.799, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc799.jpg'}], 'start': 0.799, 'title': 'Css flexbox crash course', 'summary': 'Provides a quick crash course on css flexbox, aimed at beginners who want to start using flexbox in their projects. it includes a mention of the website traverseymedia.com for additional resources.', 'chapters': [{'end': 45.645, 'start': 0.799, 'title': 'Quick css flexbox crash course', 'summary': 'Provides a quick crash course on css flexbox, aimed at beginners who know css but want to start using flexbox in their projects, and includes a mention of the website traverseymedia.com for additional resources.', 'duration': 44.846, 'highlights': ['TraverseyMedia.com is mentioned as a resource for tutorials, videos, free courses, premium courses by Eduonics, and source code.', 'The video provides a quick crash course on CSS Flexbox for beginners who know CSS but want to start using Flexbox in their projects.', 'The chapter offers a break from JavaScript and PHP videos and aims to help beginners brush up on their Flexbox skills.']}], 'duration': 44.846, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc799.jpg', 'highlights': ['The video provides a quick crash course on CSS Flexbox for beginners who know CSS but want to start using Flexbox in their projects.', 'The chapter offers a break from JavaScript and PHP videos and aims to help beginners brush up on their Flexbox skills.', 'TraverseyMedia.com is mentioned as a resource for tutorials, videos, free courses, premium courses by Eduonics, and source code.']}, {'end': 647.143, 'segs': [{'end': 122.597, 'src': 'embed', 'start': 88.91, 'weight': 0, 'content': [{'end': 92.072, 'text': 'So Flexbox has basically taken care of all of this.', 'start': 88.91, 'duration': 3.162}, {'end': 93.993, 'text': "There's no floats at all.", 'start': 92.692, 'duration': 1.301}, {'end': 105.541, 'text': "It's responsive and mobile-friendly, and it looks good on smaller screens, and of course you can use media queries to make that work even better.", 'start': 95.154, 'duration': 10.387}, {'end': 109.584, 'text': 'Positioning child elements is much, much easier.', 'start': 106.521, 'duration': 3.063}, {'end': 115.649, 'text': "And flex containers, their margins don't collapse with the margins of their contents.", 'start': 110.465, 'duration': 5.184}, {'end': 122.597, 'text': 'And then another great feature is that if you want to change the order of the elements, so, for instance,', 'start': 117.114, 'duration': 5.483}], 'summary': 'Flexbox simplifies layout, responsive, and mobile-friendly, with easier child element positioning.', 'duration': 33.687, 'max_score': 88.91, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc88910.jpg'}, {'end': 177.361, 'src': 'embed', 'start': 139.005, 'weight': 4, 'content': [{'end': 141.026, 'text': "And we'll get into all of this as we move along.", 'start': 139.005, 'duration': 2.021}, {'end': 151.975, 'text': "Alright, so some of the concepts of the flexible box model is the ability to alter item width and height to best fit in its container's available free space.", 'start': 142.126, 'duration': 9.849}, {'end': 155.358, 'text': 'Flexbox is also direction agnostic.', 'start': 152.875, 'duration': 2.483}, {'end': 164.345, 'text': 'Alright, and this is different than the block model, which is vertically biased, and then the inline, which is horizontally biased.', 'start': 156.198, 'duration': 8.147}, {'end': 166.967, 'text': 'Flexbox works well for both.', 'start': 164.886, 'duration': 2.081}, {'end': 177.361, 'text': "Flexbox was created for small scale layouts and there's another standard called grids which is geared more towards larger scale stuff.", 'start': 168.45, 'duration': 8.911}], 'summary': 'Flexbox allows altering item dimensions to fit container space, suitable for small scale layouts.', 'duration': 38.356, 'max_score': 139.005, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc139005.jpg'}, {'end': 250.642, 'src': 'embed', 'start': 220.408, 'weight': 5, 'content': [{'end': 233.033, 'text': 'And we can use certain alignment properties to position items here and to change directions and vertically and horizontally align, all kinds of stuff.', 'start': 220.408, 'duration': 12.625}, {'end': 237.874, 'text': "But it's kind of hard to explain just talking and showing you a diagram.", 'start': 233.553, 'duration': 4.321}, {'end': 242.416, 'text': "So we will get into the code, and I'll show you how it works.", 'start': 238.655, 'duration': 3.761}, {'end': 246.06, 'text': 'So here are the main flex properties.', 'start': 243.999, 'duration': 2.061}, {'end': 248.081, 'text': 'So we have display flex.', 'start': 246.54, 'duration': 1.541}, {'end': 250.642, 'text': 'You can also do inline flex.', 'start': 248.981, 'duration': 1.661}], 'summary': 'The transcript discusses using alignment properties like display flex and inline flex for positioning items.', 'duration': 30.234, 'max_score': 220.408, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc220408.jpg'}, {'end': 385.212, 'src': 'heatmap', 'start': 356.218, 'weight': 0.748, 'content': [{'end': 359.701, 'text': "Let's go ahead and jump into some code, and I'll show you how this works.", 'start': 356.218, 'duration': 3.483}, {'end': 370.17, 'text': 'All right, so what I have here, guys, I have the scratchpad.io console where we can edit our HTML and CSS, and this will live reload.', 'start': 360.802, 'duration': 9.368}, {'end': 376.619, 'text': 'And what we have is, if we look at the HTML, we have a div with the class of container1,', 'start': 371.111, 'duration': 5.508}, {'end': 382.388, 'text': "and that's wrapped around three other divs with the class of box1, box2, and box3..", 'start': 376.619, 'duration': 5.769}, {'end': 385.212, 'text': 'And they all have just an h3 and a paragraph.', 'start': 382.848, 'duration': 2.364}], 'summary': 'Demonstration of html and css editing on scratchpad.io console with live reload.', 'duration': 28.994, 'max_score': 356.218, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc356218.jpg'}, {'end': 441.226, 'src': 'heatmap', 'start': 403.453, 'weight': 0.91, 'content': [{'end': 408.616, 'text': "Now let's say that we want these to be side by side and take up the whole width.", 'start': 403.453, 'duration': 5.163}, {'end': 415.38, 'text': 'So all we have to do is go to the container element and say display flex.', 'start': 409.257, 'duration': 6.123}, {'end': 419.423, 'text': 'And you can see that it just automatically puts them side by side.', 'start': 416.361, 'duration': 3.062}, {'end': 421.944, 'text': "We didn't have to put in any floats or anything like that.", 'start': 419.443, 'duration': 2.501}, {'end': 426.287, 'text': 'And that may be very well the only thing that you want to do.', 'start': 422.905, 'duration': 3.382}, {'end': 427.408, 'text': "And that's fine.", 'start': 426.707, 'duration': 0.701}, {'end': 430.93, 'text': "But let's go in a little further and let's assign flex.", 'start': 428.148, 'duration': 2.782}, {'end': 441.226, 'text': "we'll say flex1 and we're going to assign flex1 to all three of these elements.", 'start': 434.042, 'duration': 7.184}], 'summary': 'Using display flex to arrange elements side by side, no floats needed.', 'duration': 37.773, 'max_score': 403.453, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc403453.jpg'}, {'end': 578.693, 'src': 'heatmap', 'start': 543.669, 'weight': 0.753, 'content': [{'end': 560.644, 'text': "then we could go to our container and let's say, We can say a line items and let's set it to flex, dash, start, All right.", 'start': 543.669, 'duration': 16.975}, {'end': 564.986, 'text': 'now you can see that box one is shorter because it has less content.', 'start': 560.644, 'duration': 4.342}, {'end': 572.07, 'text': 'if we want to go the other way and put it towards the bottom, we could say Flex end, and that would move it down.', 'start': 564.986, 'duration': 7.084}, {'end': 574.091, 'text': "all right, and I'm actually going to leave these.", 'start': 572.07, 'duration': 2.021}, {'end': 578.693, 'text': "I'm just going to comment them out just so you guys can have this for future reference.", 'start': 574.091, 'duration': 4.602}], 'summary': 'Demonstrating css alignment using flexbox with flex-start and flex-end.', 'duration': 35.024, 'max_score': 543.669, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc543669.jpg'}], 'start': 46.704, 'title': 'Flexbox layout and properties', 'summary': 'Introduces flexbox as a modern layout model simplifying arrangement of items, making it responsive and mobile-friendly, allowing easy reordering of elements. it also covers the concepts and properties of the flexible box model, including its direction-agnostic nature, and use for small-scale layouts, with demonstrations of main flex properties in a live example.', 'chapters': [{'end': 138.404, 'start': 46.704, 'title': 'Understanding flexbox layout', 'summary': 'Introduces flexbox as a modern layout model that simplifies arranging items within a container, eliminating the need for floats and complex math, making it responsive and mobile-friendly, and allowing easy reordering of elements without editing html.', 'duration': 91.7, 'highlights': ['Flexbox simplifies layout arrangement by eliminating the need for floats, making it responsive and mobile-friendly, and allowing easy reordering of elements without editing HTML.', 'Flexbox eliminates the need for complex math calculations for margins and widths, providing a cleaner and easier way to arrange items within a container.', "Flex containers have child elements whose margins don't collapse with the margins of their contents, making positioning child elements much easier.", 'Flexbox allows the use of media queries to enhance responsiveness on smaller screens, further improving its mobile-friendly nature.']}, {'end': 647.143, 'start': 139.005, 'title': 'Flexbox layout and properties', 'summary': 'Introduces the concepts and properties of the flexible box model, explaining its ability to alter item width and height, its direction-agnostic nature, and its use for small-scale layouts. it also covers the main flex properties and demonstrates their application in a live example.', 'duration': 508.138, 'highlights': ["Flexbox is direction agnostic, unlike the vertically biased block model and horizontally biased inline model, and is suitable for both small and large scale layouts. Flexbox allows for altering item width and height to fit the container's free space, is not biased in any direction, and is suitable for small and large scale layouts.", 'The main flex properties include display flex, flex direction, flex wrap, flex basis, justify content, align items, and align content, providing control over layout and alignment. The main flex properties like display flex, flex direction, flex wrap, flex basis, justify content, align items, and align content offer control over layout and alignment.', 'Demonstration of applying flex properties in a live example, illustrating how to use display flex and assign flex values to create different layouts and change the order of elements without altering the HTML structure. A live example showcases the application of flex properties, including using display flex and assigning flex values to create various layouts and change element order without HTML modification.']}], 'duration': 600.439, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc46704.jpg', 'highlights': ['Flexbox simplifies layout arrangement, making it responsive and mobile-friendly, and allows easy reordering of elements without editing HTML.', 'Flexbox eliminates the need for complex math calculations for margins and widths, providing a cleaner and easier way to arrange items within a container.', "Flex containers have child elements whose margins don't collapse with the margins of their contents, making positioning child elements much easier.", 'Flexbox allows the use of media queries to enhance responsiveness on smaller screens, further improving its mobile-friendly nature.', "Flexbox is direction agnostic, suitable for both small and large scale layouts, and allows altering item width and height to fit the container's free space.", 'The main flex properties include display flex, flex direction, flex wrap, flex basis, justify content, align items, and align content, providing control over layout and alignment.', 'Demonstration of applying flex properties in a live example, illustrating how to use display flex and assign flex values to create different layouts and change the order of elements without altering the HTML structure.']}, {'end': 1198.306, 'segs': [{'end': 735.08, 'src': 'heatmap', 'start': 681.746, 'weight': 0, 'content': [{'end': 686.509, 'text': 'So container two, and then each div inside has a class of container two box.', 'start': 681.746, 'duration': 4.763}, {'end': 687.35, 'text': "They're all the same.", 'start': 686.529, 'duration': 0.821}, {'end': 692.654, 'text': "For what I want to show you, I don't need to have them with different class names.", 'start': 688.491, 'duration': 4.163}, {'end': 701.802, 'text': "All right, and then let's just go ahead and add our borders and stuff to that by just saying container two div.", 'start': 693.655, 'duration': 8.147}, {'end': 707.835, 'text': 'All right, so what I want to do now is take the container two box.', 'start': 703.513, 'duration': 4.322}, {'end': 710.857, 'text': 'Remember that pertains to all three of these boxes.', 'start': 707.875, 'duration': 2.982}, {'end': 712.478, 'text': 'They all have the same class.', 'start': 711.317, 'duration': 1.161}, {'end': 717.46, 'text': "All right, so let's go up here and just put that in there.", 'start': 713.598, 'duration': 3.862}, {'end': 723.583, 'text': "And let's set a width and we'll set that to 30%.", 'start': 718.961, 'duration': 4.622}, {'end': 727.525, 'text': 'Okay, so you can now see that the boxes are 30% wide.', 'start': 723.583, 'duration': 3.942}, {'end': 735.08, 'text': "Now they're not side by side because we haven't attached them to a flexbox yet.", 'start': 730.259, 'duration': 4.821}], 'summary': 'Styling three identical boxes within container two, each 30% wide.', 'duration': 27.205, 'max_score': 681.746, 'thumbnail': ''}, {'end': 904.061, 'src': 'embed', 'start': 836.836, 'weight': 2, 'content': [{'end': 838.756, 'text': 'but we want margins in the middle.', 'start': 836.836, 'duration': 1.92}, {'end': 841.597, 'text': 'so we want to set it to space between.', 'start': 838.756, 'duration': 2.841}, {'end': 852.759, 'text': "okay, and you can see that that puts the margins in the middle, all right, and I'm going to actually change that to, let's say, 25 or 27, all right,", 'start': 841.597, 'duration': 11.162}, {'end': 861.543, 'text': 'we also can do space around.', 'start': 852.759, 'duration': 8.784}, {'end': 865.227, 'text': "Now notice with space between, there's nothing on the sides.", 'start': 862.164, 'duration': 3.063}, {'end': 866.469, 'text': "There's no margin on the side.", 'start': 865.247, 'duration': 1.222}, {'end': 867.049, 'text': "It's flush.", 'start': 866.509, 'duration': 0.54}, {'end': 872.595, 'text': "But if we say space around, that's going to also add some margins on the side.", 'start': 867.59, 'duration': 5.005}, {'end': 876.92, 'text': "Alright, but I'm going to keep it at space between.", 'start': 872.615, 'duration': 4.305}, {'end': 881.965, 'text': "I didn't mean to save it.", 'start': 876.94, 'duration': 5.025}, {'end': 897.356, 'text': 'now using with is fine, it does work, but if you want to make it more, I guess flexi, then you want to use flex basis, okay,', 'start': 884.167, 'duration': 13.189}, {'end': 898.958, 'text': 'which does the same exact thing.', 'start': 897.356, 'duration': 1.602}, {'end': 904.061, 'text': "it's just a more flexbox way to do it, okay, rather than with use flex basis.", 'start': 898.958, 'duration': 5.103}], 'summary': 'Using flex basis can provide more flexibility than width in setting margins in the middle.', 'duration': 67.225, 'max_score': 836.836, 'thumbnail': ''}, {'end': 971.178, 'src': 'embed', 'start': 933.121, 'weight': 1, 'content': [{'end': 936.786, 'text': "We don't want to have a three column layout when you're on a smartphone.", 'start': 933.121, 'duration': 3.665}, {'end': 944.636, 'text': 'So to fix this, what we can do is just use a simple media query around our containers.', 'start': 937.507, 'duration': 7.129}, {'end': 948.261, 'text': "So up here at the top, let's say media.", 'start': 944.817, 'duration': 3.444}, {'end': 955.834, 'text': "don't like this editor.", 'start': 953.593, 'duration': 2.241}, {'end': 971.178, 'text': "so media, and let's say min with, and we'll set this to, let's say, seven, seven hundred and sixty-eight pixels, all right,", 'start': 955.834, 'duration': 15.344}], 'summary': 'Use a media query to change layout on smartphones at 768 pixels.', 'duration': 38.057, 'max_score': 933.121, 'thumbnail': ''}, {'end': 1126.61, 'src': 'embed', 'start': 1092.381, 'weight': 3, 'content': [{'end': 1096.708, 'text': "And let's make sure we add the display flex.", 'start': 1092.381, 'duration': 4.327}, {'end': 1098.992, 'text': "I'm not going to put it in the media query, this one.", 'start': 1096.788, 'duration': 2.204}, {'end': 1103.118, 'text': 'So container three.', 'start': 1101.075, 'duration': 2.043}, {'end': 1108.823, 'text': 'display flex.', 'start': 1107.082, 'duration': 1.741}, {'end': 1113.705, 'text': 'alright, so now we have these boxes side by side and I want them to wrap.', 'start': 1108.823, 'duration': 4.882}, {'end': 1122.469, 'text': "so I'm gonna go to the container 3 and we're just gonna set flex dash wrap and we're gonna set that to wrap.", 'start': 1113.705, 'duration': 8.764}, {'end': 1126.61, 'text': 'and now you can see that at a certain point this one gets pushed down there.', 'start': 1122.469, 'duration': 4.141}], 'summary': 'Using display: flex and flex-wrap to arrange boxes side by side and make them wrap at a certain point.', 'duration': 34.229, 'max_score': 1092.381, 'thumbnail': ''}, {'end': 1198.306, 'src': 'embed', 'start': 1175.834, 'weight': 5, 'content': [{'end': 1178.135, 'text': 'hopefully it helps some you guys out.', 'start': 1175.834, 'duration': 2.301}, {'end': 1184.058, 'text': 'I will make this code available on my website, travestymedia.com,', 'start': 1178.135, 'duration': 5.923}, {'end': 1190.041, 'text': 'so that you guys can kinda use it as a reference when you want to use it in your projects.', 'start': 1184.058, 'duration': 5.983}, {'end': 1191.062, 'text': 'but yeah.', 'start': 1190.041, 'duration': 1.021}, {'end': 1198.306, 'text': "so if you like this video, please subscribe, leave a like comment, leave a dislike if you didn't like it and I will see you next time.", 'start': 1191.062, 'duration': 7.244}], 'summary': 'Code available on travestymedia.com for reference in projects. subscribe and leave feedback.', 'duration': 22.472, 'max_score': 1175.834, 'thumbnail': ''}], 'start': 650.089, 'title': 'Css flexbox layout and responsive design', 'summary': 'Discusses using css flexbox to specify widths, set margins, and align items in a container, demonstrating the use of percentages and flexbox properties. it also covers utilizing media queries to create a responsive layout, adjusting column display based on screen width, and enabling wrapping of elements for mobile devices.', 'chapters': [{'end': 904.061, 'start': 650.089, 'title': 'Css flexbox layout', 'summary': 'Discusses using css flexbox to specify widths, set margins, and align items in a container, demonstrating the use of percentages and flexbox properties like display flex, justify content, and flex basis.', 'duration': 253.972, 'highlights': ["Demonstrating the use of percentages for setting the width of boxes to 30% and aligning them side by side using display flex. The speaker sets the width of the boxes to 30% and aligns them side by side using the 'display: flex' property.", "Explaining the use of the justify content property to add margins in the middle by setting it to space between. The speaker explains the use of 'justify-content: space-between' to add margins in the middle of the containers.", "Introducing the flex basis property as a more flexible way to specify widths in flexbox. The speaker introduces the 'flex-basis' property as a more flexible way to specify widths in flexbox."]}, {'end': 1198.306, 'start': 905.928, 'title': 'Responsive design with media queries', 'summary': 'Discusses using media queries to create a responsive layout, adjusting column display based on screen width, and utilizing flexbox to enable wrapping of elements for mobile devices, with a practical demonstration of code implementation.', 'duration': 292.378, 'highlights': ['Using media queries to create a responsive layout The speaker demonstrates using a media query with a minimum width of 768 pixels to adjust the layout for mobile devices, ensuring that the three column layout transitions to a different display on smaller screens.', 'Practical demonstration of flexbox implementation for wrapping elements The speaker showcases the use of flexbox to enable wrapping of elements for mobile devices, illustrating how the boxes wrap into two rows as the screen size decreases, with adjustments made to flex basis and justify content.', "Making the code available for reference on the speaker's website The speaker mentions making the code available on their website for viewers to use as a reference in their projects, encouraging them to subscribe and interact with the content through likes, comments, and feedback."]}], 'duration': 548.217, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/JJSoEo8JSnc/pics/JJSoEo8JSnc650089.jpg', 'highlights': ['Demonstrating the use of percentages for setting the width of boxes to 30% and aligning them side by side using display flex.', 'Using media queries to create a responsive layout.', 'Introducing the flex basis property as a more flexible way to specify widths in flexbox.', 'Practical demonstration of flexbox implementation for wrapping elements.', 'Explaining the use of the justify content property to add margins in the middle by setting it to space between.', "Making the code available for reference on the speaker's website."]}], 'highlights': ['The video provides a quick crash course on CSS Flexbox for beginners who know CSS but want to start using Flexbox in their projects.', 'Flexbox simplifies layout arrangement, making it responsive and mobile-friendly, and allows easy reordering of elements without editing HTML.', 'Demonstration of applying flex properties in a live example, illustrating how to use display flex and assign flex values to create different layouts and change the order of elements without altering the HTML structure.', 'Using media queries to create a responsive layout.', 'The main flex properties include display flex, flex direction, flex wrap, flex basis, justify content, align items, and align content, providing control over layout and alignment.']}