.embed-container {
 position: relative;
 padding-bottom: 56.25%;
 height: 0;
 overflow: hidden;
 max-width: 100%;
 height: auto;
 margin-top: 30px;
 margin-bottom: 30px;
}
.embed-container iframe, .embed-container object, .embed-container embed {
 position: absolute;
 top: 0;
 left: 0;
 width: 100%;
 height: 100%;
}