JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="btn">Кнопка</a>

CSS

.btn{
      position: relative;
    display: inline-block;
        z-index: 0;
    font-family: inherit;
    outline: 0;
    text-align: center;
    border: none;
    color:#fff;
    font-weight: 600;
    font-size: 17px;
    border-radius: 50px;
    line-height: 1;
    text-transform: uppercase;
    padding: 14px 28px 16px;
text-decoration: none;
    cursor: pointer;
    position: relative;
    background: green;
    transition: all 240ms ease;
}