* {
  font-family: "Poppins", sans-serif;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.demo {
  width: 100%;
  height: 100vh;

  display: flex;
  justify-content: center;
  align-items: center;
}
.demo model-viewer{
  width: 100%;
  height: 100%;
}
.btn-container{
  position: absolute;
  bottom: 50px;
  width: 100%;
  text-align: center;
}

.btn-container button{
  border: none;
  background: #edda73;
  text-transform: uppercase;
  height: 40px;
  width: 150px;
  margin: 5px 15px;
  cursor: pointer;
  font-weight: bold;
  font-size: 16px;
}
button:focus{
  outline: none;
}
button:active{
  transform: scale(0.98);
}