字体图标的引用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>字体图标</title>
    <link rel="stylesheet" href="./font_icon/iconfont.css">
</head>
<style>
    .icon span:first-of-type{
        color: red;
    }
    .icon span:nth-of-type(2){
        color:brown;
        font-size: 2em;
    }
    .icon span:last-of-type{
        font-size: 3em;
    }
</style>
<body>
    <div class="icon">  
        <h1>字体图标</h1>
        第一个京东图标：<span class="iconfont icon-jingdong"></span>
        <br>
        第二个京东图标：<span class="iconfont icon-jingdong1"></span>
        <br>
        第三个京东图标：<span class="iconfont icon-jingdong"></span>
    </div>
</body>
</html>

效果图如下：

媒体查询

PC端优先

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html{
        font-size: 10px;
    }
    button{
        background-color: blue;
        color: aliceblue;
        border: none;
    }
    button:hover{
        background: red;
        cursor: pointer;
    }
    .text1{
        font-size: 1.5rem;
    }
    .text2{
        font-size:2rem;
    }
    .text3{
        font-size:3rem;
    }
    @media(min-width:2560px){
        html{
            font-size: 26px;
        }
    }
    @media(min-width:1920px) and (max-width:2560px){
        html{
            font-size:24px;
        }
    }
    @media(min-width:1680px) and (max-width:1920px){
        html{
            font-size:22px;
        }
    }
    @media(min-width:1600px) and (max-width:1680px){
        html{
            font-size:20px;
        }
    }
    @media(min-width:1440px) and (max-width:1600px){
        html{
            font-size:18px;
        }
    }
    @media(min-width:1366px) and (max-width:1440px){
        html{
            font-size:16px;
        }
    }
    @media (min-width: 600px) and (max-width:1366px){
        html {
          font-size: 16px;
        }
    } 
    @media (min-width: 414px) and (max-width:600px) {
        html {
          font-size: 14px;
        }
    }
    @media (min-width: 375px) and (max-width: 413px) {
        html {
          font-size: 12px;
        }
    }
    @media (max-width: 374px) {
        html {
          font-size: 10px;
        }
    }
</style>
<body>
    <button class="text1">bt1</button>
    <button class="text2">bt2</button>
    <button class="text3">bt3</button>
</body>
</html>

效果图如下：

批改老师：

PHPz

批改状态：合格

老师批语：

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2022-07-04 19:45:45