.filter-show-button {
    display: none;
}

/* Для выезжающего фильтра на мобильном */
@media (max-width: 991px) {
    .shop-nav {
        display:none;
    }

    div.characteristics-filter {
        position: fixed;
        top: 0;
        left: -280px; /* скрыто за экраном */
        height: 100%;
        width: 280px;
        z-index: 1000;
        overflow-y: auto;
        transition: left 0.3s ease;
    }
      
    div.characteristics-filter.open {
        left: 0;
    }

    div.characteristics-filter .panel {
        margin-top:0px;
    }

    .filter-show-button {
        margin: 10px 0 20px 0;
        display: block;
    }

    .filter-show-button button {
        width: 100%;
        font-size: 18px;
    }
    
    .filter-show-button button.btn-primary:active,
    .filter-show-button button.btn-primary:focus {
        background-color: #0060aa;
    }
    
    .overlay-for-filter {
        display: none;
        position: fixed;
        top: 0; left: 0;
        width: 100%; height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 900;
    }
    .overlay-for-filter.visible {
        display: block;
    }




}