colorgame.css

body{
  font-family: "Century Gothic", "Arial";
  font-weight: normal;
  background-color: #232323;
  margin: 0;
}

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


}

#colorDisplay{
  font-size: 200%;
}

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

h1{
  text-align: center;
  color:white;
  background: steelblue;
  margin: 0;
  text-transform: uppercase;
  line-height: 1.2;
  padding: 20px, 0;
}

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

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

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

button {
  border: none;
  background: none;
  text-tranform: uppercase;
  height: 100%;
  font-weight: bold;
  color: steelblue;
  font-family:  "Century Gothic", "Arial";
  letter-spacing: 1px;
  font-size: inherit;
  transition: all 0.3;
  -webkit-transition: background 0.3s;
  -moz-transtion: background 0.3s;
}

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