.main{
    background-image: url(https://i.im.ge/2024/08/01/VeuDCa.SmokyMountain1.jpeg);
    animation:   change 15s infinite ease-in-out;
}
@keyframes change{
    0%
    {
        background-image: url(https://i.im.ge/2024/08/01/VeuDCa.SmokyMountain1.jpeg);
    }
    20%
    {
        background-image: url(https://i.im.ge/2024/08/01/VeuNC8.SmokyMountain2.jpeg);
    }
    40%
    {
        background-image: url(https://i.im.ge/2024/08/01/VeusGG.SmokyMountain3.jpeg);
    }
    60%
    {
        background-image: url(https://i.im.ge/2024/08/01/Veu77x.SmokyMountain4.jpeg);
    }
    80%
    {
        background-image: url(https://i.im.ge/2024/08/01/VeuIpJ.SmokyMountain5.jpeg);
    }
    100%
    {
        background-image: url(https://i.im.ge/2024/08/01/VeuCVD.SmokyMountain6.jpeg);
    }
}