.phone-button {
    position: fixed;
    right: 20px;
    bottom: 180px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    z-index: 9999;
    background-color: #337AB7;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 24 24' fill='none' stroke='%23FFF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' class='feather feather-phone'%3e%3cpath d='M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72 12.84 12.84 0 0 0 .7 2.81 2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45 12.84 12.84 0 0 0 2.81.7A2 2 0 0 1 22 16.92z'%3e%3c/path%3e%3c/svg%3e");
    background-size: 50%; 
    background-repeat: no-repeat;
    background-position: 50% 50%;
}
.phone-button:before,
.phone-button:after {
    content: " ";
    display: block;
    position: absolute;
    border: 1px solid #337AB7;
    left: -20px;
    right: -20px;
    top: -20px;
    bottom: -20px;
    border-radius: 50%;
    animation: border-animate 1.5s linear infinite;
    opacity: 0;
}
.phone-button:after{
    animation-delay: .5s;
}
@keyframes border-animate
{
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}