@-webkit-keyframes shadow {
    from {
        text-shadow: 0 3px 10px rgba(255, 255, 255, 0.3);
    }
    to {
        text-shadow: 0 3px 13px rgba(255, 255, 255, 0.9);
    }
}

@keyframes shadow {
    from {
        text-shadow: 0 3px 10px rgba(255, 255, 255, 0.3);
    }
    to {
        text-shadow: 0 3px 13px rgba(255, 255, 255, 0.9);
    }
}

.ws-contact {
    position: fixed;
    bottom: 0;
    right: 0;
    margin: 20px 30px 10px 0;
    z-index: 9999;
}

.ws-contact-icon {
    display: block;
    margin: 10px 0;
    position: relative;
    width: 50px;
    height: 50px;
    line-height: 70px;
    text-align: center;
    background: #6bb31e;
    border-radius: 50%;
    transition: 0.2s;
}

.ws-contact-icon:not(:last-child) {
    transform: translateY(100%);
    opacity: 0;
    visibility: hidden;
}

.ws-contact-icon:not(:last-child).is-active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.ws-contact-icon::before {
    content: "";
    background: url("../icons/icons8-plus-+-50.png") no-repeat;
    background-size: cover;
    width: 100%;
    height: 100%;
    display: inline-block;
    transition: 0.3s;
}

.ws-contact-icon::after {
    content: attr(tooltip);
    background: #fff;
    color: #000;
    border-radius: 50px;
    padding: 10px;
    position: absolute;
    right: 100%;
    line-height: 1;
    min-width: 150px;
    display: inline-block;
    top: 8px;
    margin-right: 10px;
    font-size: 15px;
    transition: 0.2s;
    opacity: 0;
    visibility: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.ws-contact-icon.is-active::before {
    background: url("../icons/icons8-macos-close-60.png") no-repeat;
    background-size: cover;
    width: 100%;
    height: 100%;
}

.ws-contact-icon.call {
    background: #fff;
    transition-delay: 250ms;
}

.ws-contact-icon.call::before {
    background: url("../icons/icons8-phone-call-64.png") no-repeat;
    background-size: contain;
    width: 30px;
    height: 30px;
}

.ws-contact-icon.mail {
    background: #fff;
    transition-delay: 200ms;
}

.ws-contact-icon.mail::before {
    background: url("../icons/icons8-gmail-48.png") no-repeat;
    background-size: contain;
    width: 30px;
    height: 30px;
}

.ws-contact-icon.facebook {
    background: #fff;
    transition-delay: 150ms;
}

.ws-contact-icon.facebook::before {
    background: url("../icons/icons8-facebook-48.png") no-repeat;
    background-size: contain;
    width: 30px;
    height: 30px;
}

.ws-contact-icon.message {
    background: #1f7af0;
    transition-delay: 100ms;
}

.ws-contact-icon.message::before {
    background: url("https://www.upsieutoc.com/images/2018/12/29/I6NY3Mi.png") no-repeat;
    background-size: contain;
    width: 30px;
    height: 30px;
}

.ws-contact-icon.zalo {
    background: #f1f1f1;
    transition-delay: 50ms;
}

.ws-contact-icon.zalo::before {
    background: url("https://www.upsieutoc.com/images/2018/12/29/Ph1kn8Y.png") no-repeat;
    background-size: contain;
    width: 30px;
    height: 30px;
}

.ws-contact-icon {
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.ws-contact-icon:hover::after {
    opacity: 1;
    visibility: visible;
}