.box{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-flex:inherit;-ms-flex-positive:inherit;flex-grow:inherit;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;position:absolute;width:100%;height:100%}