body {
  margin: 0;
  font-family: "Montserrat", sans-serif;
  background-color: #ffffff;
}

header {
  margin-top: 3em;
  text-align: center;
  color: white;
}

h1 {
  font-size: 2em;
  font-weight: 900;
  color: rgb(13, 233, 233);
  text-align: center;
}
footer{
  width: 100% !important;
  height: 100% !important;
  text-align: center;
  background-color: black;
  color: #ffffff;
  padding: 10px;
  bottom: 0;
  left: 0;
}
#container3D canvas {
  width: 100% !important;
  height: 40% !important;
 
  top: 0;
  right: 0;
}