<style>

.telegram-button {
    z-index: 9999;
}
.telegram-button a {
    color: #fff;
}
.telegram-button:before,
.telegram-button:after {
    content: " ";
    display: block;
    position: absolute;
    border: 50%;
    border: 1px solid #007BFF; /*цвет анимированных волн от кнопки*/
    left: -20px;
    right: -20px;
    top: -20px;
    bottom: -20px;
    border-radius: 50%;
    animation: animate 1.5s linear infinite;
    opacity: 0;
    backface-visibility: hidden; 
}

.telegram-button:after{
    animation-delay: .5s;
}

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


</style>