<div>
  내용
</div>
div {
  padding:10px;
  font-size:2rem;
  width:1000px;
  margin:0 auto;
  background-color:red;
  white-space:nowrap;
  /* 필요에 따라 가로 스크롤바 생성 */
  overflow-x:scroll;
}

External CSS

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External JavaScript

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