JSFiddle - React, Tailwind, and code Playground

HTML

I <span class="strike">love</span> hate hotdogs

CSS

body{
    font-size: 45px;
}

.strike{
    position: relative;
}

.strike::after{
    content: '';
    border-bottom: 4px solid red;
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
}