.header {
    background-color: pink;
    height: 120px;
}

.sticky {
    position: sticky;
    top: 10px;
}

.content {
    height: 1000px;
}

.menu {
    background-color: red;
    color: white;
}

.related {
    background-color: grey;
    height: 100px;
}

.footer {
    background-color: blue;
}

.tall {
    height: auto;
}