JSFiddle - React, Tailwind, and code Playground

HTML

<h1>TEXY TXT <span>+</span></h1>

CSS

span {
    border-radius: 50%;
    border-style:solid;
    border-width: 1px 3px 1px 1px;
    padding:0 2%;
    cursor:pointer;
    margin:0px;
}
/* Just to see if that would modify anything */
 h1 {
    padding:0px;
    margin:0px;
}