JSFiddle - React, Tailwind, and code Playground

HTML

<div class='text' style='width:300px;'>
    <div class='bloqued'></div>
    <p>Its my life!</p>
</div>

<div class='text' style='width:100px;'>
    <div class='bloqued'></div>
    <p>Its my life!</p>
</div>

<div class='text' style='width:10%;'>
    <div class='bloqued'></div>
    <p>Its my life!</p>
</div>

CSS

.text {
    border: 1px solid #ccc;
    margin: 15px;
    position: relative;
}

.text p { padding: 15px; }

.text .bloqued {
    background-color: rgba(0,0,0,0.3);
    position: absolute;
    width: 100%;
    border: 1px solid black;
    height: 100%;
}