#mainPage.backgrounds{
    position: relative;
    margin-left: -30px;
    margin-right: -30px;
}
@media screen and (max-width: 1200px) {
    #mainPage.backgrounds{
        padding: 0;
    }
}
#mainPage.backgrounds .container{
    max-width: 1200px !important;
    background-color: #FFF;
    padding: 40px;
    transition: none !important;
}
#mainPage.backgrounds::before{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-image: var(--background-image);
    transition: opacity 1s ease-in-out;
    opacity: 1;
    z-index: -1;
}
#mainPage.backgrounds.changing-background::before{
    opacity: 0;
}