<div class="container">
        <div class="card">
            <h1>It's about the underline</h1>
            <p>Lorem ipsum dolor sit amet consectetur, adipisicing elit. Totam, maiores. Doloribus veniam vitae mollitia similique.</p>
            <a href="#">Take the test</a>
        </div>
        <div class="card">
            <h1>It's about the underline</h1>
            <p>Lorem ipsum dolor sit amet consectetur, adipisicing elit. Totam, maiores. Doloribus veniam vitae mollitia similique.</p>
            <a href="#">Purchase Now</a>
        </div>
        <div class="card">
            <h1>It's about the underline</h1>
            <p>Lorem ipsum dolor sit amet consectetur, adipisicing elit. Totam, maiores. Doloribus veniam vitae mollitia similique.</p>
            <a href="#">Tests</a>
        </div>
    </div>

body {
    background: rgb(27, 27, 32);
    font-family: 'Poppins';
    margin: 0;
    display: grid;
    place-content: center;
    height: 100vh;
}

.container {
    margin: 0 4em;
    display: flex;
    gap: 1em;
}

.card {
    background: rgb(255, 255, 255);
    margin-bottom: 2em;
    padding: 4em;
}

a {
    color: rgb(0, 99, 228);
    font-size: 1.3rem;
    text-decoration: none;
    margin-top: 1em;
    display: inline-block;
    font-weight: bold;
    padding: .5em;
    margin-left: -.5em;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);

    &:before, &:after {
        position: absolute;
        content: '';
        border-bottom: 3px solid rgb(0, 99, 228);
        border-radius: 1em;
        bottom: .3em;
        transition: transform .5s cubic-bezier(0.075, 0.82, 0.165, 1);
    }

    &:before {
        width: 1em;
        transform-origin: left;
    }

    &:after {
        width: 82%;
        left: 1em;
        transform: translateX(110%);
    }

    &:hover:before {
        transform: scaleX(0.3);
    }

    &:hover:after {
        transform: translateX(0);
    }

}