body::before {
    content: "";
    position: absolute;
    top: 0; 
    left: 0;
    width: 100%; 
    height: 100%;
    background-image: url('../images/background.jfif');
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    filter: grayscale(50%);
}

body.preload .card,
body.preload footer {
    opacity: 0;
}

.card,footer {
    transition: opacity 2s ease;
}

#profile{
    width : 120px;
    filter : grayscale(30%);
}

.social-icons{
    list-style: none;
    font-size: 1.2rem;
}

.social-icons li {
    display: inline-block;
    margin: 0 15px;
}

.social-icons a{
    color :#666
}

.social-icons i{
    transition: all 1s;
}

.social-icons .fa-phone{ 
    transform: rotate(90deg) 
}

.social-icons .fa-facebook-f:hover{ 
    color : #3b5998; 
}

.social-icons .fa-envelope:hover{ 
    color : #D44638; 
}

.social-icons .fa-phone-alt:hover{ 
    color : green; 
}

.social-icons .fa-linkedin:hover{ 
    color : #0e76a8; 
}

.social-icons .fa-image:hover{ 
    color : #e78b12; 
}

footer{
    position: relative;
}