JSFiddle - React, Tailwind, and code Playground

HTML

<a href=""class="btn btn-donate">Donate <span>Us</span></a>

CSS

.btn-donate{
    background: #97c83e;
    text-align: center;
    width: 149px;
    height: 148px;
    border-radius: 100%;
    display: inline-block;
    font-size: 35px;
    line-height: 2.3;
    vertical-align:middle;
    color: white;
    font-weight: bold;
    text-decoration: none
}
span{
  font-familty: ;
}