<body>
<div class="navbar">
<input type="checkbox" name="" id="checkbox">
<!--复选框的id属性值和label元素的for属性值必须是相同的,才能够通过点击label选中复选框-->
<label for="checkbox">
<i class="fa fa-bars"></i>
</label>
<ul>
<li>
<img src="./img/1.jpg" alt="">
<span>欢迎您！管理员</span>
</li>
<li>
<a href="#">
<i class="fa fa-home"></i>
<span>后台首页</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-sitemap"></i>
<span>商品列表</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-user"></i>
<span>用户列表</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-shopping-cart"></i>
<span>订单列表</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-windows"></i>
<span>功能列表</span>
</a>
</li>
</ul>
</div>
</body>
/*页面初始化清除元素原有的内外边距*/
*{
margin: 0;
padding: 0;
}
body{
overflow: hidden;
}
.navbar{
position: relative;
width: 100%;
}
.navbar input{
display: none;
}
.navbar label{
position: absolute;
top: 0;
left: 70px;
/*宽度占浏览器可视区域的宽度*/
width: 100%;
height: 43px;
padding-left: 20px;
font-size: 30px;
color: #5a738e;
background-color: #ededed;
border: 1px solid #d9dee4;
cursor: pointer;
transition: 0.5s;
}
.navbar ul{
overflow: hidden;
list-style: none;
width: 70px;
/*高度占浏览器可视区域的高度*/
height: 100vh;
background-color: #2a3f54;
transition: 0.5s;
}
.navbar ul li{
height: 70px;
margin-bottom: 10px;
}
.navbar ul li:first-child{
display: flex;
justify-content: center;
align-items: center;
padding: 10px 0;
}
.navbar ul li:first-child img{
width: 50px;
border-radius: 50%;
}
.navbar ul li:first-child span{
color: #fff;
white-space: nowrap;
display: none;
}
.navbar ul li a{
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
color: #d1d1d1;
text-decoration: none;
width: 100%;
height: 100%;
}
.navbar ul li a i{
font-size: 25px;
margin-bottom: 10px;
}
.navbar ul li a span{
font-size: 10px;
white-space: nowrap;
}
.navbar ul li a:hover{
color: #fff;
background-color: #35495d;
}
/*: checked选择器判断复选框是否被选中*Ⅰ
/*+是相邻兄弟选择器找到了input的下一个兄弟label */
.navbar input:checked + label{
left: 200px;
}
/* ~也是兄弟选择器但是可以找到隔了几代的兄弟*/
.navbar input:checked ~ ul{
width: 200px;
}
.navbar input:checked ~ ul li:first-child{
justify-content: flex-start;
}
.navbar input:checked ~ ul li:first-child span{
margin-left: 14px;
display: block;
}
.navbar input:checked ~ ul li a{
flex-direction: row;
justify-content: center;
}
.navbar input:checked ~ ul li a i{
font-size: 18px;
margin: 0 15px;
}
.navbar input:checked ~ ul li a span{
font-size: 13px;
}