ie is not compatible with css

IE is not compatible with CSS: Solutions and practical experience

With the continuous development of Internet technology, CSS has become one of the important tools for web design and layout. However, the problem is that IE (especially IE6) is not compatible with CSS, which brings a lot of trouble and trouble to developers.

In actual work, I have encountered many problems that IE is not compatible with CSS. Below, I will share with you some of my experiences and techniques in solving these problems, hoping to help and inspire readers in need.

1. Familiar with the CSS incompatibility problem of IE

First of all, we need to understand the CSS incompatibility problem of IE. Only by understanding the root cause of the problem can we solve it better it. Here are some common IE CSS incompatibility issues:

• Box model issues. IE6 uses the IE box model by default instead of the standard box model. This causes problems when calculating the width and height of elements.
• PNG transparency problem. IE6 does not support PNG transparency, and IE6 and IE7 handle PNG transparency differently.
• Floating and clearing issues. IE6 and IE7 have some issues with handling floats and clears, resulting in confusing layouts.
• Inline block-level element problem. IE6 and IE7 handle inline block-level elements differently from standard browsers, which can easily lead to layout problems.
• Position:relative and z-index issues. IE6 and IE7 also handle position:relative and z-index differently from standard browsers, so special attention is required.

2. Using conditional comments

Conditional comments are a special form of comments for IE browsers, which allow us to set special CSS styles for IE. We can identify the IE browser through conditional comments, and then add corresponding CSS code to address IE problems. For example:

<!--[if IE 6]>
    <link href="ie6.css" rel="stylesheet" type="text/css" />
<![endif]-->

We can also use conditional comments in CSS files:

#box {
    height:150px;
    width:300px;
    /* IE6 */ 
    _height:200px;
    _width:350px;
}

In the above code, we use the underscore prefix to specify styles that only take effect in IE6.

3. Using Hack

Hack is a technical means to target the syntax differences of IE browsers. By writing non-standard CSS code, we can achieve specific effects in IE. For example:

#box {
   /* 在IE中，动态属性（expression）可以用来改变元素的样式。 */
   width:100px;         /* 标准浏览器 */
   width:expression( document.documentElement.clientWidth > 500 ? "500px" : "auto" );
}

4. Using JS plugins and frameworks

IE CSS incompatibility issues have been around for a long time, so there have been many efforts in the community to address these issues JS plugins and frameworks. For example, we can use jquery's compatibility plug-in jquery-compat to solve problems in IE.

<!--[if lt IE 9]>
  <script src="jquery-1.11.3.min.js"></script>
  <script src="jquery-compat.js"></script>
<![endif]-->

By using jquery-compat, we can easily solve many CSS problems in IE browser.

5. Reverse development

In actual work, we can use reverse development (also called "progressive enhancement") to ensure that the website works well in IE. Good compatibility. The basic idea of ​​reverse development is to first consider the problems existing in the IE browser, and then write specific CSS styles to address these problems. Finally, we will consider how to optimize and streamline these styles to meet standard browsers.

6. Testing and debugging

Finally, we need to test and debug our website to ensure that we can correctly display what we want in different IE browsers and versions. desired effect. We can use the developer tools of IE browser to debug CSS and locate the problem. In addition, we can also use some browser testing tools to test the performance of our website in different browsers.

Summary

IE CSS incompatibility problem is a commonplace topic, but in actual work, it still brings us a lot of challenges. By reading this article, I believe readers have learned some experiences and techniques for solving IE CSS incompatibility issues. Whether you are a front-end development engineer or a website designer, we hope that when you encounter these problems at work, you can solve them faster and more accurately.

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