@-webkit-keyframes ripple {
    0% {
        opacity: 1;
        transform: scale(0)
    }
    100% {
        opacity: 0;
        transform: scale(1)
    }
}

@keyframes ripple {
    0% {
        opacity: 1;
        transform: scale(0)
    }
    100% {
        opacity: 0;
        transform: scale(1)
    }
}

section.home-content .home-news-box .item {
    position: relative;
}

.site-foot__fixed-btn {
    position: fixed;
    z-index: 5;
    bottom: 50px;
    right: 50px;
}

.site-foot__fixed-btn img {
    width: 50px;
    position: relative;
    z-index: 1;
}

.site-foot__fixed-btn .ripple {
    position: absolute;
    width: 120px;
    height: 120px;
    z-index: 0;
    left: 50%;
    top: 50%;
    opacity: 0;
    margin: -60px 0 0 -60px;
    border-radius: 100px;
    -webkit-animation: ripple 1.8s infinite;
    animation: ripple 1.8s infinite;
    background: #25d366;
}

.site-foot__fixed-btn .ripple:nth-child(2) {
    animation-delay: .3s;
    -webkit-animation-delay: .3s;
}

.site-foot__fixed-btn .ripple:nth-child(3) {
    animation-delay: .6s;
    -webkit-animation-delay: .6s;
}