.grid {
    width: 400px;
    height: 600px;
    background-image: url('background.png');
    position: relative;
    font-size: 100px;
    text-align: center;
}

.doodler {
    width: 85px;
    height: 85px;
    background-image: url('doodler-guy.png');
    position: absolute;
}

.platform {
    width: 85px;
    height: 15px;
    background-image: url('platform.png'); 
    position: absolute;
    
}

.btn1 {
    background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  font-size: 16px;
  margin: 0 auto;
  position: absolute;
  top: 50%;
  -ms-transform:translateY(-50%) translateX(-50%);
  transform: translateY(-50%) translateX(-50%);
  


}