.item {
    border-top: 1px solid #ccc;
    text-align: center;
    padding: 0.6em;
}

.header {
    position: sticky;
    top: 0;
    padding: 1em;
    background: lightgreen;
}

.footer {
    position: sticky;
    bottom: 0;
    padding: 2.2em;
    background: lightcoral;
}