css - Select menu option border none

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css - Select menu option border none

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

css - Select menu option border none

I am trying to change select option border but unable to do that, I have tried it many times but not find the proper solution. I have attached the screen shot .

enter image description here

<head>
  <style>
    select option {
      background:transparent;
      border:0;
    }
  </style>
</head>

<body>
  <select>
    <option>hello</option>
    <option>hello</option>
    <option>hello</option>
    <option>hello</option>
    <option>hello</option>
  </select>
</body>

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1 Reply

深蓝 · Answer 1 · 2021-10-17T01:11:15+0000

The dropdown of a select is part of what's called the ShadowDOM. In the current CSS specs, level 3, there's no way to target most ShadowDOM elements. You can read the specs on the ShadowDOM here, though there's not much in there regarding what you want.

Chrome has a few proprietary selectors to change some shadowDOM elements, but not all. Firefox has even fewer (as far as I know), and Opera has none. IE is probably just as bad or worse.

Your best bet with compatibility in mind is to use a Jquery plugin to mimic the select using other HTML elements if you really want to style it. Here's a neat one.

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css - Select menu option border none

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