#mobile_cta_button_sm {
    display: none;
}

@media(max-width: 767px){
    #mobile_cta_button_sm {
        display: block;
        position: fixed !important; 
        bottom: 0;
        width: 100vw;
        text-align: center;
        padding: 15px;
        z-index: 10000;
        padding-left: 0;
    }
    
    #mobile_cta_button_sm a.tel-link {
        text-decoration: none;
    }
    
    #mobile_cta_button_sm a.tel-link span {
        font-size: 1.2rem;
    }
}