html,
 body {
     margin: 0;
     padding: 0;
     width: 100%;
     height: 100%;
     background-color: black;
     overflow: hidden;
 }

 #streamFrame {
     width: 100%;
     height: 100%;
     border: 0;
 }

 #adBox {
     position: fixed;
     right: 10px;
     bottom: 10px;
     width: 728px;
     height: 90px;
     z-index: 9999;
 }

 #adClose {
     position: absolute;
     top: -8px;
     right: -8px;
     width: 24px;
     height: 24px;
     background: red;
     color: #fff;
     border: none;
     border-radius: 50%;
     font-size: 14px;
     cursor: pointer;
     line-height: 22px;
 }