JSFiddle - React, Tailwind, and code Playground

HTML

<div id="searchContainer">
    <input type="text" />
    <button>Search</button>
</div>

CSS

#searchContainer {
    width: 230px;
    height: 35px;
    background-color: red;

    position: absolute;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;

    margin: auto;
}