body {
    margin: 0;
    padding: 100px;
}

#cont1 {
      display: flex; /* Makes #container a flex container */
    }

#cont2 {
    display: flex;
    padding: 200px;
    text-align: center;
}

.Header {
  background-color: grey;
  background-image: url('crota_speed_28_70_frames_max_size.gif');
  background-size: auto;
  background-repeat: no-repeat;
  background-repeat: repeat-x;
  background-position: center;
  height: 10vh;
  padding: 100px;
}


.bg {
  background-image: url('crota_speed_28_70_frames_max_size.gif');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  height: 100vh;
}