body{
    margin:0;
    flex-direction: column;
    display: flex;
    min-height: 100vh;
}
content{
    flex:1;
}
footer {
    width: 100%;
    color: #555;
    padding: 12px 15px;
    background:#efefef;
    border-radius:10px 10px 0 0;
}
@font-face{font-family:Material Icons;font-style:normal;font-weight:400;font-display:block;src:url(../font/MaterialIcons-Regular.woff2) format("woff2")}
@media (prefers-color-scheme: dark){
    footer{background: #464646;color: #fff;}
}
@media (min-width:840px) {
    body.withmenuleft{
        position: absolute; left: 360px; width: calc(100% - 360px);
    }
}