body,html{padding:0;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}#header{height:60px;top:0;right:0;border-bottom:1px solid #000}#header,#sidebar{position:fixed;left:0}#sidebar{top:60px;width:240px;bottom:0;height:calc(100% - 60px);border-right:1px solid #000}#main{position:relative;top:60px;width:100%;min-height:100vh}#footer,#main{margin-left:240px}#footer{height:40px;border-top:1px solid #000}