<link rel="stylesheet" href="https://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.css">
<script src="https://apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="https://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.js"></script>
<div data-role="content">
<form method="post" action="demoform.asp">
<div data-role="fieldcontain">
<fieldset data-role="controlgroup" data-type="horizontal">
<label for="day">选择日期:</label>
<select name="day" id="day">
<option value="mon">Monday</option>