当我给.banner-nav ul li加了个height:20px就好了,这时为什么呢
.banner-nav {
height: 20px;
margin-top: 20px;
}
.banner-nav ul li {
float: left;
height: 20px;
/* 一开始没加就是第一张图效果 加了之后就好了 */
color: #ccc;
}
.banner-nav ul li:nth-child(-n+3)::after {
content: '';
font-family: 'icomoon';
}
.content {
height: 600px;
}
.content .iphone {
float: left;
width: 500px;
height: 500px;
border: 1px solid #ccc;
margin-top: 5px;
}
.content .message {
float: left;
}
<div class="banner-nav w">
<ul>
<li>
<a href="#">手机、数码、通讯</a>
</li>
<li>
<a href="#">手机</a>
</li>
<li>
<a href="#">Apple苹果</a>
</li>
<li>
<a href="#">iphone 6S Plus系统</a>
</li>
</ul>
</div>
<div class="content w">
<div class="iphone"></div>
<div class="message">
<h3>wwwqqqqqqqqqqqqqqqqqqqqq</h3>
</div>
</div>