.video{
    max-width: 100%; 
    width: 620px; 
    height: auto; 
    padding-top: 0; 
    padding-bottom: 0; 
    margin: 0 auto;
    border: 0px solid #fff;
    margin-bottom: 20px;
}
.embed-container{
    position: relative;
    padding-bottom: 56.25%;
    height: auto;
    overflow: hidden;
    width: 620px;
    max-width: 100%;
    margin-bottom: 1em;
}
.embed-container iframe { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
}