.big-data-main{left:0;bottom:0;top:0;right:0;position:absolute}.big-data-main .button-container{padding:10px 20px}.big-data-main .button-container .nav-title{width:100px;height:30px;display:inline-block;line-height:30px;text-align:center}.big-data-main .iframe{width:100%;height:100%}