body {
    background: url(//dn.33kupona.ru/action/description/275/back.jpg) repeat;
}
.textAbout {
    margin: 0 -30px;
    background: url(//dn.33kupona.ru/action/description/275/mainPhoto.jpg) -1px 0 no-repeat;
    padding: 165px 80px 890px 80px;
}
.textAbout p {
    padding-bottom: 15px;
}

.flex-container-1 img {
    max-width: 100%;
}

.flex-container-1 {
    display: flex; 
    flex-wrap: wrap; 
    justify-content:center; 
    padding: 5px; 
    gap: 5px;
}