HTMLify

body {
    display: grid;
    place-items: center;
    height: 100vh;
    background: #151515;
    font-family: 'Poppins', sans-serif;
    font-size: 27px;
    font-weight: 700;
    line-height: 1.5;
}

a {
    color: #54b3d6;
    text-decoration: none;
    box-shadow: inset 0 0 0 0 #54b3d6;
    padding: 0 .25rem;
    margin: 0 -.25rem;
    transition: color .3s ease-in-out, box-shadow .3s ease-in-out;
}

a:hover {
    color: #151515;
    box-shadow: inset 200px 0 0 0 #54b3d6;
}