youtube embedded video as iframe with border-radius

Question

I got a problem I absolutely don\'t understand. I got a website with YouTube video iframe and want to round the borders via CSS. On http://www.wunschpreisdeal.de/empfehlung/

Answer 1

Small but beautiful trick.

iframe,
object,
embed{
    border:5px solid rgba(255,255,255,0);
    -webkit-border-radius: 20px !important; 
    -ms-border-radius: 20px !important; 
    -o-border-radius: 20px !important;  
    border-radius: 20px !important;     
}

DEMO