body
{
    background-color:#000000;
    color:#ffffff;
}
.video{
    width:100%;
    height:600px;
}
.katalog{
    text-align:center;
    color:white;
    margin-top:20px;
}
    .katalog a {
        color: white;
        text-decoration: none;
        font-size: 16px;
    }
.resim {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    justify-content: center;
}