button {
  font-family: "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Geneva, Verdana, sans-serif;
  background-color: white;
}

#dotLeft {
  display: none;
  position: fixed;
  left: 20%;
  top: 40%;
  width: 100px;
  height: 100px;
  border-radius: 200px; 
  background-color: black;
}

#dotRight {
  display: none;
  position: fixed;
  right: 20%;
  top: 40%;
  width: 100px;
  height: 100px;
  border-radius: 200px; 
  background-color: black;
}

#dotNull {
  position: fixed;
  display: none;
  right: 20%;
  top: 40%;
  width: 100px;
  height: 100px;
  border-radius: 200px; 
  background-color: white;
}

#dotCenter {
  display: none;
  position: fixed;
  right: 50%;
  margin-right: -50px;
  top: 40%;
  width: 100px;
  height: 100px;
  border-radius: 200px; 
  background-color: black;
}

#spacebar {
  font-family: "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Geneva, Verdana, sans-serif;
  position: fixed;
  left: 50%;
  top: 30%;
  margin-left: -135px;
  font-size: 25px;
  background-color: white;
  border: solid black 1px;
  padding: 4px;
}

form {
  display: none;
}

button:hover {
  border-color: #336699;
  background-color: #99CCFF;
  cursor: pointer;
}