*{
  font-family: "Courier New", Courier, monospace;
}

.canvas {
  position: absolute;
  left: 0px;
  top: 0px;
  margin: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
}

.overlay {
    background-color: rgba(0, 0, 0, .15);
    width: 100%;
    text-align: center;
    color: #ffffff;
    font-size: 80px;
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

#score {
    visibility: hidden;
    color: #ffffff;
    font-size: 30px;
    position: absolute;
    top: 2%;
    left: 2%;
    z-index: 1;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
#lives {
    visibility: hidden;
    color: #ffffff;
    font-size: 30px;
    position: absolute;
    top: 2%;
    right: 2%;
    z-index: 1;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.button {
  z-index: 1;
  background-color: rgba(0, 0, 0, .15);
  bottom: 0;
  left: 0%;
  position: absolute;
  border: none;
  color: white;
  padding: 15px 30px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 28px;
  min-width: 195px;
  height: 100px;
  width: 300px;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.menu {
  z-index: 1;
  width: 100%;
  height: 100%;
}

#gameover {
  visibility: hidden;
}
#wait {
  visibility: hidden;
}
#success{
  visibility: hidden;
}
#reset_button {
  visibility: hidden;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
#start_button {
  visibility: visible;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
#menu_button {
  visibility: hidden;
  top: 62%;
  left: 50%;
  transform: translate(-50%, -50%);
}
#audio_button {
  visibility: hidden;
  height: 60px;
  width: 100px;
}