/* https://codepen.io/ovdojoey/pen/BomKyZ */
.selectable:hover {
  box-shadow: 0 0 11px rgba(33,33,33,.6);
}

.iframe-container{
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
}

.iframe-container iframe{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}