JSFiddle - React, Tailwind, and code Playground

HTML

<span>eyter terytertyertu etyurtuy46r7u47terytertyertu etyurtuy46r7u47 terytertyertu etyurtuy46r7u47 terytertyertu etyurtuy46r7u47 terytertyertu etyurtuy46r7u47</span>

CSS

span {
    border-bottom: 1px solid black;
}