.float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 25px;
    right: 25px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .float:hover {
        text-decoration: none;
        color: #fff;
        background-color: #128c7e;
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    }

    .float:focus {
        text-decoration: none;
        color: #fff;
        outline: 2px solid #25d366;
        outline-offset: 2px;
    }

    .float:visited {
        color: #fff;
        text-decoration: none;
    }

.my-float {
    margin-top: 0;
    line-height: 1;
}

/* Responsive */
@media screen and (max-width: 768px) {
    .float {
        width: 55px;
        height: 55px;
        bottom: 20px;
        right: 20px;
        font-size: 26px;
    }
}

@media screen and (max-width: 480px) {
    .float {
        width: 50px;
        height: 50px;
        bottom: 18px;
        right: 18px;
        font-size: 24px;
    }
}

@media screen and (max-width: 320px) {
    .float {
        width: 45px;
        height: 45px;
        bottom: 15px;
        right: 15px;
        font-size: 22px;
    }
}