JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" />
<select>
    <option>one</option>
</select>

CSS

input[type="text"], select {
    background-color: #ffffff;
    width: 97%;
    padding: 4px;
    margin-bottom: 6px;
    font-size: 16px;
    border: 1px solid #dfdfdf;
    display: block;

    /* CSS 3 */
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
}

select
{
    width:98%;
    /*margin-left: 10px;*/
}