#background-video {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}
style="margin: 100; padding: 20px; background-color: #d3d3d366;">
body{
    height: 100vh;
    padding:0;
    margin:0;
    font-family:verdana;
    color: white;
}

h1{
    background-color: #d3d3d366;
    padding: 10px;
    margin:25px;
    font-family: sans-serif;
    font-size: 35px;
    color: white;

}

h2{
    background-color: #d3d3d366;
    padding: 5px;
    margin:25px;
    font-family: sans-serif;
    font-size: 18px;
    color: white;
}

.ovalmask {
    width: 150px;
    height: 225px;
    mask-image: url(ovalmask.png);
    mask-repeat: no-repeat;
}