body {
  padding: 0;
  margin: 0;
  background: linear-gradient(135deg, #c3a3f1, #6414e9);
}
#container {
  height: 100vh;
  width: 100vw;
  position: relative;
}
#draggable-elem {
  position: absolute;
  background-color: #ffffff;
  font-size: 1.6em;
  width: 7em;
  height: 7em;
  position: absolute;
  transform: translate(-50%, -50%);
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  font-family: "Poppins", sans-serif;
  border-radius: 0.3em;
  cursor: move;
}