Correcting teacher:PHPz
Correction status:qualified
Teacher's comments:完成的很好,继续加油
<!DOCTYPE html>
<html lang="zh-CN">
<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>
<style>
/* CDN 服务仅供平台体验和调试使用,平台不承诺服务的稳定性,企业客户需下载字体包自行发布使用并做好备份。 */
@font-face {
font-family: 'iconfont'; /* Project id 3729000 */
src: url('//at.alicdn.com/t/c/font_3729000_n4lju3ux24b.woff2?t=1666699928473') format('woff2'),
url('//at.alicdn.com/t/c/font_3729000_n4lju3ux24b.woff?t=1666699928473') format('woff'),
url('//at.alicdn.com/t/c/font_3729000_n4lju3ux24b.ttf?t=1666699928473') format('truetype');
}
.iconfont.unicode{
font-family: iconfont;
font-size: xx-large;
cursor: pointer;
color: red;
}
.iconfont .icon-zhuce{
font-size: xx-large;
color: blue;
cursor: pointer;
}
</style>
<link rel="stylesheet" href="//at.alicdn.com/t/c/font_3729000_n4lju3ux24b.css">
</head>
<body>
<!-- unicode -->
<div class="iconfont unicode">
<span></span>
</div>
<hr>
<!-- class类 -->
<div class="iconfont">
<span class="icon-zhuce"></span>
</div>
<hr>
<style>
html{
font-size: 10px;
}
.btn.small{
font-size: 1rem;
}
.btn.middle{
font-size: 2rem;
}
.btn.large{
font-size: 3rem;
}
/* 判断最小值,并且从小到大进行判断.如果是判断最大值,就应该从大到小写 */
/* 我这边写的是移动端 故从小到大进行判断 */
/* 当最大的宽度是374px时 1rem=12px */
@media (max-width:374px) {
html{
font-size: 12px;
}
}
/* 当最大的宽度是414px 最下宽度是375时 1rem=14px */
@media (min-width:375px) and (max-width:414px) {
html{
font-size: 14px;
}
}
/* 当最小的宽度是415px时 1rem=16px */
@media (min-width:415px) {
html{
font-size: 16px;
}
}
</style>
<button class="btn small">按钮1</button>
<button class="btn middle">按钮2</button>
<button class="btn large">按钮3</button>
</body>
</html>
随着屏幕宽度的变大,而进行的rem的值的改变,从而影响元素大小