body {
  align-items: center;
  background-color: #111;
  display: flex;
  font-family: Helvetica Neue, sans-serif;
  height: 100vh;
  justify-content: center;
  margin: 0;
  padding: 0;
  line-height: 1;
  text-align: center;
  color: #00caff;
}
h1 {
  color: inherit;
  font-weight: 100;
  font-size: 8em;
  margin: 0;
  padding-bottom: 15px;
}
button {
  background: #111;
  border-radius: 0px;
  border: 1px solid #00caff;
  color: inherit;
  font-size: 2em;
  font-weight: 100;
  line-height: inherit;
  margin: 0;
  outline: none;
  padding: 5px 15px 10px;
  transition: background .2s;
}
button:hover,
button:active,
button:disabled {
  background: #00caff;
  color: #111;
}
button:active {
  outline: 2px solid #00caff;
}
button:focus {
  border: 1px solid #00caff;
}
button + button {
  margin-left: 3px;
}