em px 谷歌浏览器默认font-size 2021-07-2
2021-07-24 本文已影响0人
simok
谷歌浏览器默认font-size 16px
class 3 = class 2 class width = font-size * em class height = font-size * em
<div class="1" style="font-size: 100px;height: 60px; width: 60px; border: 1px solid red" ></div>
<div class="2" style="font-size: 16px; width: .6em; height: .6em; border: 1px solid red"></div>
<div class="3" style="width: .6em; height: .6em; border: 1px solid red"></div>
