JSFiddle - React, Tailwind, and code Playground
HTML
<!DOCTYPE html>
<html lang="zh-TW">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div class="wrap">
<form action="">
<h2>出生年份</h2>
<select name="birth" id="">
<option value="1980">1980</option>
<option value="1980">1981</option>
<option value="1980">1982</option>
<option value="1980">1983</option>
<option value="1980">1984</option>
<input type="submit" value="sent">
</select>
</form>
</div>
</body>
</html>
CSS
.wrap{
width: 1000px;
margin: 0 auto;
}
form{
margin-top: 20px;
margin-left:20px;
}