html+css：按钮上显示消息数量精简代码

来源：互联网发布：腾达路由器网络不稳定编辑：程序博客网时间：2024/06/05 19:32

效果如图
这里写图片描述
这个很多人可能没思路，其实就是a标签里面加个显示数量的div

<a href="index.html" class="nav-link">aaa<div class="nav-counter nav-counter-blue">4</div></a>

但是复杂的是css代码，如下

.nav-link {  position: relative;  padding: 0 14px;  line-height: 34px;  font-size: 10px;  font-weight: bold;  color: #555;  text-decoration: none;}.nav-link:hover {  color: #333;  text-decoration: underline;}.nav-counter {  position: absolute;  top: -1px;  right: 1px;  min-width: 8px;  height: 20px;  line-height: 20px;  margin-top: -11px;  padding: 0 6px;  font-weight: normal;  color: white;  text-align: center;  text-shadow: 0 1px rgba(0, 0, 0, 0.2);  background: #e23442;  border: 1px solid #911f28;  border-radius: 11px;  background-image: -webkit-linear-gradient(top, #e8616c, #dd202f);  background-image: -moz-linear-gradient(top, #e8616c, #dd202f);  background-image: -o-linear-gradient(top, #e8616c, #dd202f);  background-image: linear-gradient(to bottom, #e8616c, #dd202f);  -webkit-box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(0, 0, 0, 0.12);  box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(0, 0, 0, 0.12);}.nav-counter-green {  background: #75a940;  border: 1px solid #42582b;  background-image: -webkit-linear-gradient(top, #8ec15b, #689739);  background-image: -moz-linear-gradient(top, #8ec15b, #689739);  background-image: -o-linear-gradient(top, #8ec15b, #689739);  background-image: linear-gradient(to bottom, #8ec15b, #689739);}.nav-counter-blue {  background: #3b8de2;  border: 1px solid #215a96;  background-image: -webkit-linear-gradient(top, #67a7e9, #2580df);  background-image: -moz-linear-gradient(top, #67a7e9, #2580df);  background-image: -o-linear-gradient(top, #67a7e9, #2580df);  background-image: linear-gradient(to bottom, #67a7e9, #2580df);}

html十分精简，只有一句话，但是css比较复杂，主要是a标签的position: relative，里面显示消息数量的div设成position：absolute，然后就有了重叠效果。

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