JSFiddle - React, Tailwind, and code Playground

HTML

<div class="listwrapper">
    <SELECT id="mylist" size=5 >
        <OPTION Value="100">100</OPTION>
        <OPTION Value="200">200</OPTION>
        <OPTION Value="210">210</OPTION>
        <OPTION Value="211">211</OPTION>
    </SELECT>
</div>

CSS

.listwrapper
{
    padding: 0px 0px 0px 15px;
    border: solid 1px silver;
    width: 50px;
}
.listwrapper select,
.listwrapper select:active
{
    border: none 0px white;
    width: 50px;
}