.lieferschein-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    height:90vh;
}

.lieferschein-box,
.lieferschein-Items-box {
    text-align: left;
    height: 100%;
}
.header-area {
    display: flex;
    flex-wrap: wrap;
    height: 30px;
    vertical-align: middle;
    padding-left: 25px;
    gap: 5px;
    align-content: center;
}

.lieferschein-box {
    flex: 0 0 820px;
}

.lieferschein-Items-box {
    flex: 1 1 auto;
}
/* Collapse to 100% width on small screens */
@media (max-width: 1000px) {
    .lieferschein-box,
    .lieferschein-Items-box {
        flex: 1 1 100%;
        flex-shrink: 1;
    }
}