JSFiddle - React, Tailwind, and code Playground

HTML

<p class="yellow">
    this is some text. please select/double-click me to see the effect
</p>

CSS

.yellow::selection {
    background-color: yellow
}




/*vendor-prefixes. basically the same*/
.yellow::-moz-selection {
    background-color: yellow
}
.yellow::-webkit-selection {
    background-color: yellow
}
.yellow::-ms-selection {
    background-color: yellow
}
.yellow::-o-selection {
    background-color: yellow
}