html{
  height: 100%;
  width: 100%;
  font-size: 16px;
}
body {
    padding-top: 5rem;
background-image: url("lotto.png"); }

.hidden { font-size: 0; }

.navbar {
  font-family: 'Kanit', sans-serif;
}

.button {
  display: inline-block;
  padding: 50px 50px;
  font-size: 50px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #FF0000;
  border: none;
  border-radius: 50%;
  box-shadow: 0 9px #999;
}

.button:hover {background-color: #D10000}

.button:active {
  background-color: #D10000;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}