.videoWrapper {
  position: relative;
  width: 100%;
  height: 0;
  background-color: transparent;
}
.videoWrapper43 {
  padding-top: 25%;
}
.videoWrapper169 {
  padding-top: 56%;
}

.videoIframe {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: transparent;
}

.videoPoster {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  cursor: pointer;
  border: 0;
  outline: none;
  background-position: 50% 50%;
  background-size: 100% 100%;
  background-size: cover;
  text-indent: -999em;
  overflow: hidden;
  opacity: 1;
  -webkit-transition: opacity 800ms, height 0s;
  -moz-transition: opacity 800ms, height 0s;
  transition: opacity 800ms, height 0s;
  -webkit-transition-delay: 0s, 0s;
  -moz-transition-delay: 0s, 0s;
  transition-delay: 0s, 0s;
  background-color: transparent;
}
.videoPoster:before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  margin: -40px 0 0 -40px;
  border: 5px solid white;
  opacity: 0.5;
  border-radius: 100%;
  -webkit-transition: border-color 300ms;
  -moz-transition: border-color 300ms;
  transition: border-color 300ms;
  transition: opacity 300ms;
}
.videoPoster:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  margin: -20px 0 0 -10px;
  border-left: 40px solid white;
  opacity: 0.5;
  border-top: 25px solid transparent;
  border-bottom: 25px solid transparent;
  -webkit-transition: border-color 300ms;
  -moz-transition: border-color 300ms;
  transition: border-color 300ms;
  transition: opacity 300ms;
}
.videoPoster:hover:before, .videoPoster:focus:before {
  border-color: white;
  opacity: 1;
}
.videoPoster:hover:after, .videoPoster:focus:after {
  border-left-color: white;
  opacity: 1;
}
.videoWrapperActive .videoPoster {
  opacity: 0;
  height: 0;
  -webkit-transition-delay: 0s, 800ms;
  -moz-transition-delay: 0s, 800ms;
  transition-delay: 0s, 800ms;
}

body {
  font-family: avenir,sans-serif;
}

main {
  max-width: 800px;
  margin: 20px auto;
}