JSFiddle - React, Tailwind, and code Playground

HTML

<button><span>Конпка</span></button>

CSS

button {
 
    display: block;
    margin: 0;
    padding: 0;
    background: none;
    position: relative;    

    height: 50px;
    border: 1px solid #000;
}
button span{
    display: block;

    height: 100%;
}