Chrome设备模式仿真媒体查询不工作 [英] Chrome Device Mode Emulation Media Queries Not Working

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问题描述

由于某些原因,设备仿真模式不会读取我的媒体查询。它适用于其他网站,包括我自己的网站,我用bootstrap,但它不工作在我从头开始使用的媒体查询(点击媒体查询按钮,蓝色按钮,但没有显示媒体查询)。测试文件。这是Chrome中的错误还是我需要在我的文件中更改的内容?

For some reason device emulation mode is not reading my media queries. It works on other sites including my own sites that I made with bootstrap, but it's not working on media queries I am using from scratch (clicking the media queries button turns the button blue but no media queries are displayed). Test file below. Is this a bug in Chrome or is there something I need to change in my file?

<!DOCTYPE html>
<!--
Media Queries Example 1
Sam Scott, Fall 2014
-->
<html>
<head>
    <title>MQ Example 1</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
        body { font-family: sans-serif; }
        h1 { color: red; } 
        h2 { color:blue; }
        p { color:green; }

        @media (max-width: 768px) and (min-width: 481px) {
            h1 { color: green; } 
            h2 { color:red; }
            p { color:blue; }
        }

        @media (max-width:479px), print { 
            h1,h2,p { color:black; }
        }

        @media print {
            body { font-family: serif; }
        }


    </style>
</head>
<body>
    <h1>I'm a first level heading</h1>
    <p>I'm a paragraph.</p>
    <h2>I'm a second level heading</h2>
    <p>I'm another paragraph.</p>
</body>
</html>


推荐答案

我通过添加元标记page:

I fixed this problem by adding a meta tag to my page:

 <meta name="viewport" content="width=device-width">

这篇关于Chrome设备模式仿真媒体查询不工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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