Simple Calculator CSS
body {
	background-color: mediumseagreen;
}
h1 {
	color: darkgreen;
}
#result {
	color: black;
}
#container {
	position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: lightgreen;
  border-radius: 5%;
  padding: 2em;
}
*/

.text-center {
	text-align: center;
}
#container {
	width: 275px;
  margin-left: auto;
  margin-right: auto;
  border: 2px solid blue;
  padding: 1 em;
}
#clear {
	width: 100%;
}
#output {
	width: 100%;
  height: 50px;
  font-size: 2rem;
}
input[type="button"] {
	width: 5 rem;
  height: 5 rem;
  font-weight: 800;
  font-size: 2 rem;
  color: blue;
}