改變小三角
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<style>
select {
border: solid 1px #000;
appearance:none;
-moz-appearance:none;
-webkit-appearance:none;
background: url("images/z.png") no-repeat 220px center transparent;
padding-right: 14px;
}
select::-ms-expand {display: none;}
</style>
<body>
<select name="" id="myselect" onchange="show()">
<option value="">--請選擇--</option>
<option value="">1</option>
<option value="">2</option>
</select>
</body>
</html>
