body{height:100%;margin:0 auto;padding:0}body *{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-o-box-sizing:border-box;-ms-box-sizing:border-box;box-sizing:border-box}div#container{display:flex;flex-direction:column;margin:0 auto;min-height:100vh;position:relative}#container>header{width:100%}#contents{flex:1;width:100%}#container>footer{width:100%}@media print{body.no_print{display:none}}