redmine_qbo_lineitems/assets/stylesheets/line_items.css

.line-items-table {
  width: 100%;
}

.line-items-table input {
  width: 100%;
  box-sizing: border-box;
}

.qty-field {
  max-width: 90px;
}

.price-field {
  max-width: 120px;
}

/* MOBILE MODE */
@media screen and (max-width: 700px) {

  .line-items-table thead {
    display: none;
  }

  .line-items-table,
  .line-items-table tbody,
  .line-items-table tr,
  .line-items-table td {
    display: block;
    width: 100%;
  }

  .line-items-table tr {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 10px;
    margin-bottom: 10px;
    background: #fff;
  }

  .line-items-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
  }

  .line-items-table td::before {
    content: attr(data-label);
    font-weight: bold;
    margin-right: 10px;
  }

  .line-items-table td.actions {
    justify-content: flex-end;
  }

}