*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

.container{
    width:1000px;
    margin:auto;
}

.header{
    height:120px;
    background:#bfbfbf;
    text-align:center;
    line-height:120px;
    font-weight:bold;
}

.headlink{
    height:40px;
    background:#e5e5e5;
    text-align:center;
    line-height:40px;
    margin:5px 0;
}

.main{
    display:flex;
}

.left{
    width:20%;
    height:350px;
    background:#1ed3d3;
    text-align:center;
    line-height:350px;
}

.content{
    width:50%;
    height:350px;
    background:#f2f2f2;
    text-align:center;
    line-height:350px;
    margin:0 5px;
}

.right{
    width:30%;
    height:350px;
    background:#00ff00;
    text-align:center;
    line-height:350px;
}

.footer{
    height:60px;
    background:#999;
    text-align:center;
    line-height:60px;
    margin-top:5px;
}