What is html5 responsive layout

HTML5 responsive layout is a web design method based on HTML5 and CSS3 technology, which enables web pages to automatically adjust layout and display effects according to the screen size and resolution of different devices, adapting to browsing on various terminal devices. Through technical means such as elastic grid layout, media query, elastic pictures and media, breakpoints and progressive enhancement, the adaptive layout and display effect of web pages on different devices are realized. It has the ability to adapt to different devices and improve usability and accessibility. , saving time and cost, supporting search engine optimization and other advantages, it is an important practice in modern web design.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

HTML5 responsive layout is a web design method based on HTML5 and CSS3 technology. It is designed to enable web pages to automatically adjust layout and display effects according to the screen size and resolution of different devices to adapt to various terminal devices. of browsing. Compared with the traditional fixed layout, HTML5 responsive layout has the following characteristics:

1. Flexible grid layout (Fluid Grid Layout): HTML5 responsive layout uses flexible grid layout to achieve adaptability. Flexible grid layout refers to dividing the layout of a web page into multiple grids and setting the relative width of the grids to adapt to different screen sizes. Elements in web pages can automatically adjust their position and size based on the size of the grid.

2. Media Queries: Media queries are one of the core technologies of HTML5 responsive layout. Through media queries, you can apply different style rules based on different media types (such as screen, printer, etc.) and different media characteristics (such as screen width, device orientation, etc.). By setting different media query conditions, you can apply different layouts and styles for different device screen sizes and characteristics.

3. Flexible Images and Media: In HTML5 responsive layout, the size of images and media elements also need to adapt to the screen size. You can use the CSS max-width property to set the maximum width of images and media elements so that they automatically shrink on small screens without exceeding the screen boundaries.

4. Breakpoints: Breakpoints refer to critical points for switching layouts under different screen sizes. By setting breakpoints, you can switch different layouts and styles according to changes in screen width. Usually, HTML5 responsive layout switches layout at different breakpoints such as small screen, medium screen and large screen.

5. Progressive Enhancement: One of the design principles of HTML5 responsive layout is progressive enhancement. That is, first provide a good browsing experience for basic devices, and then gradually add more complex layouts and functions. This ensures that devices that do not support HTML5 responsive layout can still browse the web normally.

The advantage of HTML5 responsive layout is to provide a consistent and high-quality user experience, allowing web pages to adapt to the screen sizes and resolutions of different devices, improving the accessibility and usability of web pages. It can reduce the workload of developing and maintaining multiple independent web page versions, improve development efficiency and reduce costs. In addition, HTML5 responsive layout is also beneficial to search engine optimization and improves the ranking and visibility of web pages.

In general, HTML5 responsive layout is a web design method based on HTML5 and CSS3 technology, through flexible grid layout, media queries, flexible pictures and media, breakpoints and progressive enhancement and other technical means. , realizing the adaptive layout and display effect of web pages on different devices. It has the advantages of adapting to different devices, improving usability and accessibility, saving time and costs, and supporting search engine optimization. It is an important practice in modern web design.

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