body {
  background-color: black;
  color: #080;
  font-family: 'Bungee', monospace;
}

#entry {
  background-color: #AAA;
  color: black;
  padding-right: 5px;
}

button {
 margin: 20px;
}

#entry-text {
  margin: 18px;
  font-size: 40px;
}

.number, .operator, #dot, #equal {
  background-color: #008;
  padding: 12px;
  font-size: 40px;
  color: black;
  margin: 0;
  border: none;
}

.number:hover, .operator:hover, #dot:hover, #equal:hover {
  background-color: #FFF;
}

.number:focus, .operator:focus, #dot:focus, #equal:focus {
  border: none !important;
  outline: none;
}