/* Responsive IFrames
Source: https: //www.w3schools.com/howto/howto_css_responsive_iframes.asp
*/

.youtube {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%;
    /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
}

/* Then style the iframe to fit in the container div with full height and width */
.responsive-iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
}

/* remove space above dropdowns */

.dropdown-margin{
    margin: 0;
    position: relative;
}

.sticky {
    position: -webkit-sticky;
    /* Safari */
    position: sticky;
    top: 0;
}