img {
  max-width: 100%;
  vertical-align: middle;
  display: inline-block;
}

.w-video {
  width: 100%;
  position: relative;
  padding: 0;
}
.w-video iframe,
.w-video object,
.w-video embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}