/* general styling */

html {
  font-size: 10px;
  height: 100%;
}

body {
  width: 100%;
  height: inherit;
}

canvas {
  display: block;
}

/* header styling */

h1 {
  position: absolute;
  bottom: 10px;
  right: 15px;
  font-size: 3rem;
  margin: 0;
  color: white;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

/* button styling */

button {
  background-color: #0088cc;
  background-image: linear-gradient(to bottom, #0088cc 0%, #0055cc 100%);
  text-shadow: 1px 1px 1px black;
  text-align: center;
  color: white;
  border: none;
  width: 150px;
  font-size: 1.6rem;
  line-height: 2rem;
  padding: 0.5rem;
  display: block;
  opacity: 0.3;

  transition: 1s all;
  -webkit-transition: 1s all;

  position: absolute;
}

button:hover,
button:focus {
  box-shadow: inset 1px 1px 2px rgba(0, 0, 0, 0.7);
  opacity: 1;
}

button:active {
  box-shadow: inset 2px 2px 3px rgba(0, 0, 0, 0.7);
}

#activated {
  background-color: red;
  color: white;
}

.mute {
  top: 41px;
  left: 5px;
}

.clear {
  top: 6px;
  left: 5px;
}

.start-message {
  position: absolute;
  font-size: 1.4rem;
  left: 5px;
}

.control-message {
  position: absolute;
  font-size: 1.4rem;
  top: 70px;
  left: 5px;
}