/**
 * Embed styles
 */
.embed-responsive {
    position: relative;
    display: block;
    height: 0;
    padding: 0;
    overflow: hidden;
    margin-top: 1.4em;
    margin-bottom: 1em;
}

.embed-responsive.embed-responsive-16by9 {
    padding-bottom: 56.25%;
}
.embed-responsive.embed-responsive-4by3 {
    padding-bottom: 75%;
}
.embed-responsive.embed-responsive-21by9 {
    padding-bottom: 42.86%;
}

.embed-responsive iframe {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}