body {
  background-color: rgb(36, 37, 38);
  color: white;
}

div.col {
  padding: 10px;
  display: block;
  box-sizing: border-box;
}

div.c1 {
  height: 40px;
  width: 100%;
}
div.c2 {
  height: 50px;
  width: 100%;
  margin-top: 10px;
}

#3d-container {
  border: 2px solid darkgray;
  display: block;
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
}

#parameters {
  box-sizing: border-box;
  font-family: 'Arial', cursive;
  font-size: 14px;
  margin: 0;
  padding: 10px;
  width: 100%;
  top: 10px;
  left: 10px;
  color: lightgray;
  background: none;
  z-index: 100;
}

#parameters input {
  color: yellow;
  background-color: black;
  border: none;
  border: 1px solid rgb(104, 104, 104);
  width: 20px;
  text-align: center;
  line-height: 150%;
  margin-bottom: 5px;
}