iframe {
  display: inline-block;
}
.video-wall {
  position: relative;
  color: #333;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  gap: 8px;
  min-height: 10em;
  margin: 0;
  background-color: #f6f6f6;
  box-sizing: border-box;
  border: 0.5em solid #eee;
  padding: 1rem 2rem;
  font-size: 0.9rem;
  overflow-y: auto;
}
.video-wall strong {
  display: block;
  text-align: center;
  font-size: 1rem;
  margin: 0;
}
.video-wall div {
  position: absolute;
  width: calc(100% - 2em);
  top: 3em;
  bottom: 7em;
  overflow-y: auto;
}
.video-wall p {
  font-size: 0.8em;
  margin: 0 0 1em;
}
.video-wall a {
  color: inherit;
}
.video-wall .video-link {
  display: block;
  white-space: nowrap;
  font-size: 0.8em;
  margin: 0;
}
.video-wall button {
  -webkit-appearance: none;
  cursor: pointer;
  color: #eee;
  font: 700 .75rem Helvetica, Arial, sans-serif;
  display: block;
  width: 140px;
  height: 48px;
  border: 0 none;
  border-radius: 0.75em;
  padding: 11px 0 11px 5.5em;
  text-align: left;
  margin: 0;
  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 0.3s;
}
.video-wall button:hover {
  background-color: #444;
}

/* fix */
.frame-container {
  position: relative;
}