.entry-content,footer a {
  color:#FFFFFF;
}

.container {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-top: 56.25%;
}

/* 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%;
}