body {
    display: grid;
    place-items: center;
}

.login-form > a {
    display: inline-block;
    line-height: 1;
    padding: 1em 1.5em;

    font-size: xx-large;
    font-weight: 300;
    text-decoration: none;

    color: currentColor;
    transition: color 100ms;

    border: 3px solid #777;
    border-radius: 50vw;
}

.login-form > a:hover {
    color: #999;
}