.arrow-up{
display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    bottom: 2%;
    opacity: 0;
    background: #102e50;
    width: 48px;
    height: 48px;
    border-radius: 100%;
    transition: opacity .5s ease-in-out;
    right: 4.5%;
}

.arrow-up.show{
opacity: 1;
}

.arrow-up:hover{
opacity: .7;
cursor: pointer;
}

.arrow-up:hover svg{
transform: translateY(-5px);
}

.arrow-up svg{
width: 15px;
height: 28px;
transition: transform .5s ease-in-out;
}

.arrow-up svg path{
fill: #fff;
}

/* ==================== TEST start ==================== * / 
body::before {
    content: "✅";
    position: fixed;
    top: 0;
    left: 0;
    background: lime;
    color: black;
    padding: 10px 20px;
    font-size: 10px;
    font-weight: bold;
    z-index: 99999;
}
/ * ==================== TEST finish ==================== */


/* ========== filter closing (support) ========== */

/* default: Filter bloks are cloesd */
.smart-filter-block[data-role="bx_filter_block"] {
    display: none !important;
}

/* Bitrix JS show opened */
.smart-filter-block[data-role="bx_filter_block"][style*="block"] {
    display: block !important;
}

/* ========== finish ========== */