iframe {
  display:inline-block
}
iframe[data-src] {
  background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"><text text-anchor="middle" alignment-baseline="central" y="50%" font-size="1em" fill="black"><tspan x="50%" dy="-1.5em">Dieses Video kann nur mit</tspan><tspan x="50%" dy="1.5em">aktiviertem JavaScript</tspan><tspan x="50%" dy="1.5em">abgespielt werden</tspan></text></svg>')
}
.video-wall,
iframe[data-src] {
  position:absolute;
  font:400 1em/1.46 Helvetica,Arial,sans-serif;
  color:#333;
  display:inline-block;
  height:100%;
  width:100%;
  margin:0;
  background-color:#eee;
  box-sizing:border-box;
  border:1.5em solid #ccc;
  padding:1em
}
.video-wall strong {
  display:block;
  text-align:center;
  font-size:1.1em;
  margin:0
}
.video-wall div {
  position:absolute;
  width:calc(100% - 2em);
  top:3em;
  bottom:7em;
  overflow-y:auto
}
.video-wall p {
  font-size:.8em;
  margin:0 0 1em
}
.video-wall a {
  color:inherit
}
.video-wall .video-link {
  display:block;
  white-space:nowrap;
  font-size:.8em;
  margin:0;
  position:absolute;
  left:50%;
  bottom:6em;
  transform:translateX(-50%)
}
.video-wall button {
  -webkit-appearance:none;
  appearance:none;
  cursor:pointer;
  color:#eee;
  font:700 .8em/1.2 Helvetica,Arial,sans-serif;
  display:block;
  width:11.5em;
  height:4.25em;
  border:0 none;
  border-radius:.75em;
  padding:0 0 0 5.5em;
  text-align:left;
  margin:0;
  position:absolute;
  left:50%;
  bottom:1em;
  transform:translateX(-50%);
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 28 28'%3E%3Cpath fill='%23eee' d='M11.109 17.625l7.562-3.906-7.562-3.953v7.859zM14 4.156c5.891 0 9.797 0.281 9.797 0.281 0.547 0.063 1.75 0.063 2.812 1.188 0 0 0.859 0.844 1.109 2.781 0.297 2.266 0.281 4.531 0.281 4.531v2.125s0.016 2.266-0.281 4.531c-0.25 1.922-1.109 2.781-1.109 2.781-1.062 1.109-2.266 1.109-2.812 1.172 0 0-3.906 0.297-9.797 0.297v0c-7.281-0.063-9.516-0.281-9.516-0.281-0.625-0.109-2.031-0.078-3.094-1.188 0 0-0.859-0.859-1.109-2.781-0.297-2.266-0.281-4.531-0.281-4.531v-2.125s-0.016-2.266 0.281-4.531c0.25-1.937 1.109-2.781 1.109-2.781 1.062-1.125 2.266-1.125 2.812-1.188 0 0 3.906-0.281 9.797-0.281v0z'%3E%3C/path%3E%3C/svg%3E") no-repeat 1em center #666;
  background-size:3.5em;
  transition:background-color .3s
}
.video-wall button:hover {
  background-color:#444
}