JSFiddle - React, Tailwind, and code Playground

HTML

<select id="myselect" multiple="multiple" size="5">
<option value="1">one</option>
<option value="2">two</option>
<option value="361">three</option>
<option value="4">four</option>
</select>

CSS

select {
    width: 100%;
}
select#myselect option {
    width: 6%;
    float: both;
    border: 1px solid;
    text-align: -webkit-center;
    border-color: darkgray;

}