<button id="scissors" class="btn">가위</button>
  <button id="rock" class="btn">바위</button>
  <button id="paper" class="btn">보</button>
</div>
<div id="score">0</div>
<script>
const $computer = document.querySelector('#computer'); 
const $score = document.querySelector('#score');
const $rock = document.querySelector('#rock');
const $scissors = document.querySelector('#scissors'); 
const $paper = document.querySelector('#paper');
const IMG_URL = './rsp.png';
$computer.style.background = `url(${IMG_URL}) 0 0`;
$computer.style.backgroundSize = 'auto 200px';
</script>
</body>
</html>