.a_footer{
    color: aliceblue;
}

.a_footer:hover{
    color: #0a66c2;

}

.bi {
    color: aliceblue;
    transform: scale(1.5);
    transition: 0.4s;
}

.bi-instagram:hover { color: #e1306c; }
.bi-facebook:hover { color: #1877f2; }
.bi-linkedin:hover { color: #0a66c2; }
.bi-youtube:hover { color: #ff0000; }