body {
  margin: 0;
  padding: 0;
}
.cnt {
  width: 100vw;
  height: 100vh;
  position: relative;
}

#model-viewer2 {
  width: 100%;
  height: 100%;
}

.loader {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  border: 5px solid #f3f3f3;
  border-radius: 50%;
  border-top: 5px solid #98ad3c;
  width: 50px;
  height: 50px;
  -webkit-animation: spin 2s linear infinite;
  animation: spin 2s linear infinite;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

#arbutton {
  background-color: #98ad3c;
  color: white;
  border-radius: 4px;
  border: none;
  position: absolute;
  top: 20px;
  left: 20px;
  outline: none;
  padding: 5px 10px;
}