.customer-service {
    width: 70px;
    height: 70px;
    position: fixed;
    z-index: 10;
    top: 5%;
    right: 5px;
    border-radius: 50%;
}

.customer-service .btn {
    position: relative;
    z-index: 2;
    border-radius: 50%;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.customer-service .pic {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    z-index: 1;
}

.customer-service .line {
    width: 100%;
    height: 100%;
    /*border: 3px solid palevioletred;*/
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    border-radius: 50%;
    animation: emit 1s infinite;
}

@keyframes emit {
    0% {
    }
    100% {
        border-width: 1px;
        opacity: 0;
        transform: scale(1.5);
    }
}