JSFiddle - React, Tailwind, and code Playground

HTML

<form>
<input required />
    <input type="submit"/>
</form>

CSS

::-webkit-validation-bubble-message 
{
    color: #eee;
    background: #000;
    border-color: #444;
    -webkit-box-shadow: 4px 4px 4px rgba(100,100,100,0.5);
}

form ::-webkit-validation-bubble-message:before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 4px;
    background: url(http://google.com/favicon.ico)
}

::-webkit-validation-bubble-arrow {
    background: #000;
    border-color: #444;
    -webkit-box-shadow: 0 0 0 0;
}

input::-webkit-validation-bubble-icon {
    display: none;
}