Trenner in Datenanzeige Frontend

// add rows with text as headlines to structure the details view window.addEventListener('DOMContentLoaded', function() {     // console.log('FEWA script loaded');     const table = document.getElementsByClassName('visdatatable')[0];     let row = table.insertRow(0);     let cell = row.insertCell(0);     cell.innerHTML = 'Reisename';     cell.colSpan = 2;     cell.style.fontSize = "x-large";     cell.style.backgroundColor = 'LightGreen';     row = table.insertRow(3);     cell = row.insertCell(0);     cell.innerHTML = 'Reisestadt';     cell.colSpan = 2;     cell.style.fontSize = "x-large";     cell.style.backgroundColor = 'LightBlue';     row = table.insertRow(6);     cell = row.insertCell(0);     cell.innerHTML = 'Reisekontakt';     cell.colSpan = 2;     cell.style.fontSize = "x-large";     cell.style.backgroundColor = 'LightSalmon'; });