:root {
    --link-size: 36px;
    --trans-property: all 0.3s ease;
}

.social-icons {
    display: flex;
    height: 8vh;
    align-items: center;
}

.social-icon {
    display: flex;
    position: relative;
    overflow: hidden;
    width: var(--link-size);
    height: var(--link-size);
    margin: 4px;
    background-color: #F5F5F5;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--trans-property);
}

    .social-icon i {
        margin: auto;
        font-size: 24px;
        color: #204BCE;
        z-index: 1;
        transition: var(--trans-property);
    }

    .social-icon:after {
        content: "";
        width: var(--link-size);
        height: var(--link-size);
        position: absolute;
        transform: translate(0, var(--link-size));
        border-radius: 50%;
        transition: var(--trans-property);
    }

    .social-icon.twitter:after {
        background-color: #1da1f2;
    }

    .social-icon.linkedin:after {
        background-color: #1769ff;
    }

    .social-icon.instagram:after {
        background-color: #5851db;
    }

    .social-icon.facebook:after {
        background-color: #1769ff;
    }

    /*** Animations ***/
    .social-icon:hover {
        transform: translateY(-4px);
        box-shadow: 0px 4px 12px rgba(0,0,0,0.16);
    }

        .social-icon:hover i {
            color: #fff;
        }

        .social-icon:hover:after {
            transform: translate(0) scale(1.2);
        }