JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="submit" />

CSS

input, select, button {
    box-sizing: content-box;
    -moz-box-sizing: content-box;
    -webkit-box-sizing: content-box;
}

input::-moz-focus-inner { border: 0; }

input {
    padding: 3px;
    border: 1px solid #c0c0c0;
    background: #e5e5e5;
    color: #246;
    margin: 1px 2px;
    width: auto;
}