*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center}