*{
    box-sizing: border-box;
}
.kontenjer{
    height: 1300px;
    width: 800px;
    background-color: beige;
    margin: 0 auto;
    align-items: center;
   
}
.zaglavlje{
    height: 100px;
    width: 800px;
    background-color: lightcoral;
    position: fixed;
    top: 0;
}
.glavni{
    height: 1300px;
    width: 800px;
    background-color: lightpink;
    margin-top: 100px;
}
.podnozje{
    height: 100px;
    width: 800px;
    background-color: lightcoral;
    position: fixed;
    bottom: 0;
}