.float {
    position: fixed;
    width: 50px;
    height: 50px;
    bottom: 20px;
    left: 20px;
    background-color: #25d366;
    color: #fff;
    border-radius: 40px;
    text-align: center;
    font-size: 30px;
    /*box-shadow: 0 2px 8px #e2e2e2;*/
    z-index: 100;
}

.my-float {
    margin-top: 11px;
    color: #fff;
}