body {
 margin: auto;
width: 90vw;
min-height:98vh;
background: url(https://images.cnblogs.com/cnblogs_com/helltab/1796975/o_200701065231blog-bg01.jpg)
}

#Title {
height: 10vh;
font-weight: 700;
font-size: 24px;

}
#Title a {
color: #fff;
}

#main {
float: left;
margin: right: 2vw;
width: 65vw;
min-height: 90vh;
border-radius: 12px;
border: 2px solid #ffffffaa;
padding: 15px;
box-shadow: 10px 12px 50px #ffffffbb;
background: #ffffffcc;
}
#rightmenu{
float: right;
width: 20vw;
min-height: 90vh;
border-radius: 12px;
border: 2px solid #ffffffaa;
padding: 15px;
box-shadow: 10px 12px 50px #ffffffbb;
background: #ffffffcc;
}