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 {
    background-image: linear-gradient(to right, #54b3d6, #54b3d6 50%, #fff 50%);
    background-size: 200% 100%;
    background-position: -100%;
    display: inline-block;
    padding: 5px 0;
    position: relative;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.3s ease-in-out;
}

a::before {
    content: "";
    background: #54b3d6;
    display: block;
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 3px;
    transition: all 0.3s ease-in-out;
}

a:hover {
    background-position: 0;
}

a:hover::before {
    width: 100%;
}