.adv {
    margin: 0 0 25px 0;
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.adv>div:empty::before {
    content: "Reklama";
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
    background-color: #ddd;
    color: #808080;
    font-size: 18px;
}

.adv-no-margin {
    margin: 0;
}

.adv-middle {
    align-items: center;
}

.adv-bottom {
    align-items: flex-end;
}

.adv-sticky {
    position: sticky;
    top: 40px;
}

.adv-600 {
    height: 600px;
}

.adv-300 {
    height: 300px;
}

.adv-250 {
    height: 250px;
}

.adv-min-250 {
  min-height: 250px;
}

.adv-200 {
    height: 200px;
}

.adv-150 {
    height: 150px;
}

.adv-mobile {
    display: none;
    justify-content: center;
}

/* ADV BRANDING MOBILE */
.adv-branding-mobile {
    display: none;
    margin: 0 0 25px 0;
}
@media (max-width: 767px) {
    .adv-branding-mobile {
        display: block;
    }
    .adv.desktop {
      display: none;
    }
    .adv-mobile {
        display: flex;
        width: 100%;
        margin: 0 0 25px 0;
    }
}

.adv-branding-mobile {
    height: 300px;
    margin: 0 -15px 25px -15px;;
}

.adv-branding-mobile .adv-branding-mobile-content {
    height: 250px;
    position: relative;
}

.adv-branding-mobile .adv-branding-mobile-content>div:empty::before {
    content: "Reklama";
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
    background-color: #ddd;
    color: #808080;
    font-size: 18px;
}

.adv-branding-mobile .adv-branding-mobile-bottom {
    height: 50px;
    position: relative;
}

.adv-branding-mobile .adv-branding-mobile-bottom>div:empty::before {
    content: "Reklama";
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
    background-color: #808080;
    color: #fff;
    font-size: 18px;
}

.adv-branding-mobile .adv-branding-mobile-bottom.fixed {
    position: fixed;
    top: 42px;
    left: 0;
    width: 100%;
    height: 50px;
    z-index: 20;
}