#myVideo {
  min-width: 100%;
  max-height: 100%;
  top: 47px;
  z-index: -1;
}

.content {
  position: fixed;
  margin-left: 100px;
  background: rgba(0, 0, 0, 0.5);
  color: #f1f1f1; 
  width: 800px;
  padding: 30px;
  margin-top: 200px;
  border-radius: 6px;
}

#myBtn {
  width: 200px;
  font-size: 18px;
  padding: 10px;
  border: none;
  background: #ffaf5f;
  color: #fff;
  cursor: pointer;
  border-radius: 6px;
  margin:0 auto;
  display:block;
}

#myBtn:hover {
  background: white;
  border: 1px solid #544d45;
  color: #544d45;
}

@media screen and (max-width: 1280px) {
   #myVideo {max-width: 100%; }
   .content { width: 350px; margin-top: 80px; margin-left: 30px; }
}