/* Add here all your CSS customizations */
.iframe_container { /* video container  */
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
}
.frame_content { /* video  */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}