.fixed {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 2;
}

.fixed-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #fff;
    background-color: #F39700;
    font-weight: 700;
    padding: 10px;
    border-radius: 100%;
    font-size: 20px;
    line-height: 1.4;
    width: 140px;
    height: 140px;
    text-align: center;
    position: relative;
    transition: 0.3s ease;
}

.fixed-btn:hover {
    transform: scale(1.15);
    color: #fff;
}



.fixed-btn::before {
    content: "";
    border: 1px dotted #fff;
    width: 130px;
    height: 130px;
    position: absolute;
    top: 5px;
    left: 5px;
    border-radius: 100%;
}


@media screen and (max-width: 600px) {
    .fixed {
        width: 100%;
        left: 0;
        bottom: 0;
    }

    .fixed-btn {
        width: 100%;
        height: auto;
        padding: 15px;
        font-size: 18px;
        border-radius: 0;
    }
    
    .fixed-btn br {
        display: none;
    }
    
    .fixed-btn::before {
        border-radius: 0;
        width: calc(100% - 10px);
        height: calc(100% - 10px);
    }

    .fixed-btn:hover {
        transform: scale(1);
    }
}