<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
/* 사용자가 폰트의 크기를 조정할 경우 px는 고정되지만, rem은 가변적임 */
#px {
font-size: 16px;
}
#rem {
font-size: 1rem;
}
</style>
</head>
<body>
<div id="px">PX</div>
<div id="rem">REM</div>
</body>
</html>
Backend Engineer