<div class='box'>
  <p>단축키</p>
  <p>Shift + W,S,A,D</p>
</div>
.box {
  width: 130px;
  height: 130px;
  background: #febf00;
  position: absolute;
  top: 36%;
  left: 36%;
  border-radius: 5px;
  
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-weight: bold;  
}

.box > p:first-child {
  font-size: .93rem;
  font-weight: normal;
}

/* ---------- */

@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
  word-break: break-all;
  font-family: Pretendard;
}

body {
  width: 100%;
  height: 100vh;
  background: #f7f8fc;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
// 단축키 지정
document.addEventListener('keydown', (event) => {
  event.preventDefault();
  
  if (event.key === 'W' && event.shiftKey) {
    moveToTop();
    return false;
  }
  
  if (event.key === 'S' && event.shiftKey) {
    moveToBottom();
    return false;
  }
  
  if (event.key === 'A' && event.shiftKey) {
    moveToLeft();
    return false;
  }
  
  if (event.key === 'D' && event.shiftKey) {
    moveToRight();
    return false;
  }
});

const $box = document.querySelector('.box');

const moveToTop = () => {
  $box.style.top = Math.max($box.offsetTop - 10, 0) + 'px';
}

const moveToBottom = () => {
  $box.style.top = Math.min($box.offsetTop + 10, document.body.clientHeight - 130) + 'px';
}

const moveToLeft = () => {
  $box.style.left = Math.max($box.offsetLeft - 10, 0) + 'px';
}

const moveToRight = () => {
  $box.style.left = Math.min($box.offsetLeft + 10, document.body.clientWidth - 130) + 'px';
}

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.