web--响应式导航菜单

响应式导航菜单

代码如下

HTML代码：

    
    
    
    
    
    


    

        
        
        
    
    

        

            
首页
            
导航
            
产品
            
新闻
            
我们
        
    

     

定义样式：

*{
    margin: 0;
    padding: 0;
}
body{
    background: #000;
}
ul{
    list-style: none;
}
a{text-decoration: none}
.bars{
    width: 60px;
    height: 60px;
    background: #fff;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;  
}
.bars span{
    width: 30px;
    height: 2px;
    background: #000;
    position: absolute;
    left: calc(50% - 15px);
    top:calc(50% - 1px);
    transition: 0.1s;
}
.bars span:first-child{
    transform: translateY(-10px);
}
.bars span:last-child{
    transform: translateY(10px);
}
.bars.active span:first-child{
    transform: rotate(45deg);
}
.bars.active span:nth-child(2){
    transform: translateX(-100%);
    opacity: 0;
}
.bars.active span:last-child{
    transform: rotate(-45deg);
}
.nav{

    height: 60px;
    background: #fff;
    transition: .4s;
}
.nav ul{
    float: right;
    display: flex;
}
.nav ul li{
    border-right:1px solid rgba(0,0,0,.2);
    line-height: 60px;
}
.nav ul li:last-child{
    border: 0;
}
.nav ul li a{
    padding: 0 20px;
    display: block;
    color: #262626;
}
.nav ul li a:hover{
    background: #262626;
     color: #fff;
}
.nav.active{
    transform: translateX(-100%);
}
/*媒体查询*/
        /*屏幕宽度最大570px的时候执行里面的css*/
@media screen and (max-width:570px){
    .nav{
        height: 100vh;
    }
    .nav ul{
        width: 100%;
        display: inherit;
        text-align: center;
    }
    .nav ul li{
        border-bottom: 1px solid rgba(0,0,0,.2);
    }
}

效果图：

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