1 .responsive-iframe-container { 
2     position: relative; 
3     padding-bottom: 120%; 
4     padding-top: 30px; 
5     height: 0; 
6     overflow: auto; 
7 } 
8   
9 .responsive-iframe-container iframe,   
10 .vresponsive-iframe-container object,  
11 .vresponsive-iframe-container embed { 
12     position: absolute; 
13     top: 0; 
14     left: 0; 
15     width: 100%; 
16     height: 100%; 
17 }