.dws {
    position: fixed;
    right: 3%; 
    bottom: 40px; 
    width: 50px; 
    height: 50px; 
    transform: translate(-50%, -50%);
    cursor: pointer;
    z-index: 20;
    opacity: 1;
}

.pulse {
    width: 65px;
    height: 65px;
    color: #fff;
    background-color: #5CC2E2;
    border-radius: 50%;
    position: relative;
    transition: .5s;
}

.phone {
    position: absolute;
    font-size: 35px;
    text-align: center;
    width: 65px;
    height: 65px;
    line-height: 65px;
    animation: phone .9s ease-in-out infinite;
    cursor: pointer;
}

.pulse:hover {
    background-color: #357f96;
}

.phone i {
    transition: .5s ease-in-out;
    cursor: pointer;
}

.pulse::before,
.pulse::after {
    content: '';
    position: absolute;
    border: 1px solid #29AEE3;
    left: -20px;
    right: -20px;
    top: -20px;
    bottom: -20px;
    border-radius: 50%;
    animation: pulse 1.8s linear infinite;
    opacity: 0;
}

.pulse::after {
    animation-delay: .5s;
}

@keyframes phone {
    0%, 100% {
        transform: rotate(-20deg);
    }
    50% {
        transform: rotate(21deg);
    }
}

@keyframes pulse {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}