.float {
    position: fixed;
    width: 54px;
    height: 54px;
    bottom: 15px;
    right: 15px;
    background-color: #165aa8;
    color: #fff;
    border-radius: 50px;
    text-align: center;
    font-size: 35px;
    z-index: 100;
    line-height: 54px;
    transition: transform 0.2s ease-in-out;
}

.float:hover {
    transform: scale(1.1);
}

/* Mobile */
@media only screen and (max-width: 768px) {
    .float {
        width: 54px;
        height: 54px;
        line-height: 57px;
        font-size: 35px;
        bottom: 15px;
        right: 15px;
    }
}

/* Desktop */
@media only screen and (min-width: 769px) {
    .float {
        width: 54px;
        height: 54px;
        line-height: 52px;
        font-size: 35px;
        bottom: 15px;
        right: 15px;
    }
}