*{
padding:0;
margin:0;
}
.broadCastWrap{
 width:300px;
 height:300px;
 position:absolute;
 top:50%;
 left:50%;
 margin-left:-50px;
 margin-top:-50px;
 border:solid 1px red;
}
.broadcastWrap{
  position:absolute;
  top:0;
  right:-50px;
}
.broadcastWrap{
 border:solid 1px red;

}