body {
  background-color: #232323;
  margin:0;
  font-family: 'IBM Plex Mono', monospace;
}

h1 {
  color:white;
  text-align: center;
  padding: 20px 0;
  line-height: 1.1;
  background:steelblue;
  font-weight: normal;
  margin:0;
  text-transform: uppercase;
}

#message {
  display: inline-block;
  width:20%;
}

button {
  border:none;
  background:none;
  text-transform: uppercase;
  height:100%;
  font-weight: 700;
  color:steelblue;
  letter-spacing: 1px;
  font-size: inherit;
  transition: all 0.3s;
  -webkit-transition: all 0.3s;
  -moz-transition: sall 0.3s;
  outline: none;
}

button:hover {
  color: white;
  background: steelblue;
}

#colorDisplay {
  font-size: 200%;
}

.square {
  width: 30%;
  background: purple;
  padding-bottom: 30%;
  float:left;
  margin: 1.66%;
  border-radius: 15%;
  transition: background 0.6s;
  /*-webkit-transition:  transition: background 0.6s;*/
  /*-moz-transition:  transition: background 0.6s;*/

}

#container {
  margin: 20px auto;
  max-width: 600px;
}

#stripe {
  background-color: white;
  height: 30px;
  text-align: center;
  color: black;
}

.selected {
  background-color: steelblue;
  color: white;
}