style.css

body {
  font-family: sans-serif;
}

h1 {
  font-size: 50px;
}

.left {
  clear: left;
  float: left;
}

.right {
  clear: right;
  float: right;
}

#start,
#move,
#end {
  font-size: 50px;
  color: rgba(0,0,0, 0.3);
  -moz-transition: all 1s; 
  -webkit-transition: all 1s;  
  -ms-transition: all 1s;  
  -o-transition: all 1s;  
  transition: all 1s; 
}

#start.fired,
#move.fired,
#end.fired {
  color: rgba(0,0,0, 1);
  -moz-transition: none; 
  -webkit-transition: none;  
  -ms-transition: none;  
  -o-transition: none;  
  transition: none; 
}

.touch {
  color: white;
  background-color: black;
  position: absolute;
  height: 88px;
  width: 88px;
  border-radius: 50%;
  text-align: center;
  -webkit-transform: translate(-50%, -50%);
  font-size: 70px;
}

.nav {
  padding: 0;
}

.nav li,
.nav a {
  display: block;
}

.nav a {
  background-color: #EFEFEF;
  color: black;
  padding: 10px 0;
  margin: 10px 0;
  text-decoration: none;
}