body {
  font-family: Geneva, Tahoma, Verdana, sans-serif;
/*    font-size: 18px;*/
}

.head {
  height: 60px;
  background-color: #047e8e;
}

a {
  text-decoration: none;
  font-weight: bold;
}

a:link, a:active, a:visited {
  color: #55f;
}

a:hover {
  color: #33a;
}

button {
  margin-top: 5px;
  background-color: white;
  color: black;
  border: 2px solid green;
  border-radius: 5px;
  padding: 3px 10px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 20px;
}

button:hover {
  background-color: green;
  color: white;
  cursor: pointer;
}

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 100%;
}

.video-wrapper video {
  width: 100%;
  height: auto;
  display: block;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40%;
  height: 40%;
  background: url('play-button.svg') no-repeat center center;
  background-size: contain;
  cursor: pointer;
  z-index: 2;
}