Header tags, such as <h1>, <h2>, <h3>, etc., are HTML elements used to define headings and subheadings within web content. They help structure the content, making it easier for both users and search engines to understand the hierarchy and importance of the information presented.
The <h1> tag typically denotes the main heading, while subsequent tags like <h2> and <h3> represent subheadings. Proper use of header tags improves readability, accessibility, and SEO, as search engines use these tags to index and rank content more effectively.
Example
“Make sure to use a <h1> tag for the main title and <h2> tags for the subheadings to enhance the article’s SEO.”
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<script>
document.addEventListener('DOMContentLoaded', function() {
function transformTablesForMobile() {
if (window.innerWidth > 767) return; // Only for mobile
const tables = document.querySelectorAll('#brxe-qvtevz table');
tables.forEach(table => {
if (table.classList.contains('transformed')) return;
let headers = [];
const thead = table.querySelector('thead');
const tbody = table.querySelector('tbody');
// Get headers - check for both th and td in thead
if (thead) {
const headerRow = thead.querySelector('tr');
if (headerRow) {
// First try th, then td
let headerCells = headerRow.querySelectorAll('th');
if (headerCells.length === 0) {
headerCells = headerRow.querySelectorAll('td');
}
headers = Array.from(headerCells).map(cell => cell.textContent.trim());
}
} else if (tbody) {
// If no thead, take first row
const firstRow = tbody.querySelector('tr');
if (firstRow) {
let headerCells = firstRow.querySelectorAll('th');
if (headerCells.length === 0) {
headerCells = firstRow.querySelectorAll('td');
}
headers = Array.from(headerCells).map(cell => cell.textContent.trim());
}
}
// Return if no headers found
if (headers.length === 0) return;
// Get all data rows
const rows = Array.from(tbody.querySelectorAll('tr'));
const dataRows = rows; // All tbody rows are data rows when thead exists
// Create new structure
const newContainer = document.createElement('div');
newContainer.className = 'mobile-table-container';
// Create a section for each column
headers.forEach((header, colIndex) => {
const columnSection = document.createElement('div');
columnSection.className = 'mobile-column-section';
const columnHeader = document.createElement('div');
columnHeader.className = 'mobile-column-header';
columnHeader.innerHTML = header; // Use innerHTML to preserve formatting
columnSection.appendChild(columnHeader);
const columnList = document.createElement('div');
columnList.className = 'mobile-column-list';
dataRows.forEach(row => {
const cells = row.querySelectorAll('td');
if (cells[colIndex]) {
const item = document.createElement('div');
item.className = 'mobile-column-item';
item.innerHTML = cells[colIndex].innerHTML;
columnList.appendChild(item);
}
});
columnSection.appendChild(columnList);
newContainer.appendChild(columnSection);
});
table.style.display = 'none';
table.classList.add('transformed');
table.parentNode.insertBefore(newContainer, table.nextSibling);
});
}
transformTablesForMobile();
// Handle window resize
let resizeTimer;
window.addEventListener('resize', function() {
clearTimeout(resizeTimer);
resizeTimer = setTimeout(function() {
const containers = document.querySelectorAll('.mobile-table-container');
const tables = document.querySelectorAll('#brxe-qvtevz table.transformed');
if (window.innerWidth > 767) {
containers.forEach(c => c.style.display = 'none');
tables.forEach(t => t.style.display = 'table');
} else {
containers.forEach(c => c.style.display = 'block');
tables.forEach(t => t.style.display = 'none');
}
}, 250);
});
});
</script>/* Sticky header for tables WITH thead */
#brxe-qvtevz table thead {
background-color: #f0ebf8;
position: sticky;
top: 0;
z-index: 2;
}
#brxe-qvtevz table thead th {
background-color: #f0ebf8;
position: sticky;
top: 0;
}
/* Sticky header for tables WITHOUT thead (first row only) */
#brxe-qvtevz table:not(:has(thead)) tbody tr:first-child {
background-color: #f0ebf8;
position: sticky;
top: 0;
z-index: 2;
}
#brxe-qvtevz table:not(:has(thead)) tbody tr:first-child td,
#brxe-qvtevz table:not(:has(thead)) tbody tr:first-child th {
background-color: #f0ebf8;
position: sticky;
top: 0;
}
/* Mobile Column Layout */
@media (max-width: 767px) {
#brxe-qvtevz table{
max-height:2000px;
}
.mobile-table-container {
display: block;
margin: 20px 0;
border-radius: 12px;
overflow: hidden;
}
.mobile-column-section {
border: 1px solid #E0E0E0;
overflow: hidden;
background: white;
}
.mobile-column-header {
background-color: #E3DFF5;
padding: 15px;
font-weight: bold;
font-size: 16px;
color: #333;
}
.mobile-column-list {
padding: 0;
}
.mobile-column-item {
padding: 15px;
border-bottom: 1px solid #F0F0F0;
background: white;
font-size: 16px;
line-height: 1.6;
}
.mobile-column-item:last-child {
border-bottom: none;
}
.mobile-column-item:nth-child(odd) {
background-color: #F7F6FC;
}
.mobile-column-item:nth-child(even) {
background-color: #FAFAFA;
}
.mobile-column-item strong {
color: #333;
font-weight: 600;
}
}
