style.css

@import url("https://fonts.googleapis.com/css?family=Inconsolata:400,400i,700");
body {
  width: 100%;
  height: auto;
  font-family: monospace;
  background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="28" height="49" viewBox="0 0 28 49"%3E%3Cg fill-rule="evenodd"%3E%3Cg id="hexagons" fill="%231a1a1a" fill-opacity="0.9" fill-rule="nonzero"%3E%3Cpath d="M13.99 9.25l13 7.5v15l-13 7.5L1 31.75v-15l12.99-7.5zM3 17.9v12.7l10.99 6.34 11-6.35V17.9l-11-6.34L3 17.9zM0 15l12.98-7.5V0h-2v6.35L0 12.69v2.3zm0 18.5L12.98 41v8h-2v-6.85L0 35.81v-2.3zM15 0v7.5L27.99 15H28v-2.31h-.01L17 6.35V0h-2zm0 49v-8l12.99-7.5H28v2.31h-.01L17 42.15V49h-2z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
  background-color: black;
  repeat: no-repeat;
  margin: auto;
  padding: 10px;
  display: block;
  justify-content: center;
  align-items: center;
}

.console {
  margin: auto;
  display: block;
  width: 80%;
  height: 80vh;
  background-color: #1e1f26;
  opacity: 1;
  border: 2px solid grey;
  border-top: 24px solid grey;
  border-radius: 8px;
  overflow: auto;
  padding: 10px;
  animation-name: bounce-in-top;
  animation-duration: 2s;
}
@keyframes bounce-in-top {
  from {
    transform: translateX(-150px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.input {
  width: 100%;
  outline: none;
  border: none;
  background-color: #1e1f26;
  color: white;
}
.output {
  font-family: monospace, sans-serif;
  color: #fff;
}
		.input > span {
			margin-right: 10px;
		}
		.input > input {
			background: transparent;
			border: none;
			color: #fff;
			font-family: monospace;
			font-size: 0.8rem;
			outline: none;
			caret-color: white;
			flex-grow: 1;
		}
canvas {
  width: 100%;
}
.rep {
  color: green;
}
.error {
  color: red;
}
h5 {
  text-align: left;
  color: #ff3c41;
  font-size: 0.8rem;
  padding: 0;
}
a {
  color: #fcd000;
  text-decoration: none;
}
a:hover {
  color:#0ebeff;
  text-decoration: #fcd000 wavy underline;
}

#output p {
  height: auto; 
  margin: 0; 
  padding: 0; 
}
#output description {
  color:grey;
}