@keyframes show_contact {
    0% {
        opacity: 0;
    }
    10% {
        opacity: 0.1;
    }
    20% {
        opacity: 0.2;
    }
    30% {
        opacity: 0.3;
    }
    40% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.5;
    }
    60% {
        opacity: 0.6;
    }
    70% {
        opacity: 0.7;
    }
    80% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.9;
    }
    100% {
        opacity: 1;
    }
}

@keyframes kefu {
    from {
        height: 5rem;
    }
    to {
        height: 15rem;
    }
}