1KA_F2F/resources/sass/frontend_simple/modules/main.scss

body.landing_page  #main{
    background-color: $color_background_grey;

    .main_content{
        max-width: 1400px;
        min-height: 769px;
        margin: 0 auto;
        padding: 70px 20px 0px 20px;
    }
}