.zr2020 {background: rgba(0, 0, 0, 0) url('https://www.zabawkaroku.pl/_img/zr2025-4.jpg') no-repeat scroll center top / cover ;height: 650px !important;}


@media (max-width:767px) 
{
    .zr2020 {background: rgba(0, 0, 0, 0) url('https://www.zabawkaroku.pl/_img/zr2025-4.jpg') no-repeat scroll center top / cover ;height: 450px !important;}
}

@media (max-width:560px) 
{
   .zr2020 {background: rgba(0, 0, 0, 0) url('https://www.zabawkaroku.pl/_img/zr2025-4.jpg') no-repeat scroll center top / cover ;height: 450px !important;}
}

@media (min-width:768px) and (max-width:979px) 
{
    .zr2020 {background: rgba(0, 0, 0, 0) url('https://www.zabawkaroku.pl/_img/zr2025-4.jpg') no-repeat scroll center top / cover ;height: 450px !important;}
}

@media (min-width:1400px)
{
   .zr2020 {background: rgba(0, 0, 0, 0) url('https://www.zabawkaroku.pl/_img/zr2025-4.jpg') no-repeat scroll center top / cover ;height: 400px !important;}
}