*{
    box-sizing: border-box;
}

body{
    _background-color: rgb(132, 0, 255);
    height: 1300px;
    width: 800px;
    margin: 0 auto;
    align-items: center;
    text-align: center;
}

img{
    width: 300px;
}

.header{
    height: 100px;
    width: 800px;
    background-color :rgb(0, 0, 110);
    position: fixed;
    top: 0;
    color: rgb(107, 107, 226);
}

.sadrzaj{
    width: 800px;
    background-color: rgb(132, 0, 255);
    margin-top: 100px;
}

.podnozje{
    width: 800px;
    height: 100px;
    background-color :rgb(0, 0, 110);
    position: sticky;
    color: rgb(107, 107, 226);
    font-size: 20px;
}