HTML Colgroup Tag
We’ll talk about colgroup Tag in this post. Wishing it would satisfy the requirements for learning.
With the <cologroup> and <col> tags, customize the background color of the three columns:
Example
The following CSS code aligns text in table columns:
Example
Text in table columns can be vertically aligned (using CSS):
Example
A table column’s width can be set with CSS as follows:
Example
Uses and Definition
The colgroup Tag <colgroup> identifies a single or multiple-column group in a table for formatting.
The <colgroup> is an efficient way to apply styles to entire columns rather than writing them for each cell separately.
Browser Compatibility
| Element |  |  |  |  |  |
|---|---|---|---|---|---|
| <colgroup> | Yes | Yes | Yes | Yes | Yes |
Attributes
| Attribute | Value | Overview |
|---|---|---|
| span | number | Determine how many columns a column group needs to span. |
Event Attributes
Similarly, the HTML5 colgroup Tag <colgroup> is compatible with the Event Attributes.<!–
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Global Attributes
The colgroup Tag <colgroup> also functions with the Global Attributes in HTML.
CSS Default Settings
Thus many browsers will present the following default values for the Tag body <colgroup> element:
colgroup {
display: table-column-group;
}HTML Colgroup Tag Advantages
The HTML <colgroup> tag provides several advantages when used to group and define columns in an HTML table:
- By using the <colgroup> tag to group columns together, authors can apply attributes such as styles, width, and other properties to the entire group, rather than having to specify them for each individual column. This can simplify the markup of large tables and make it easier to maintain and update the table code.
- Applying attributes such as background color or font size to an entire column group using the <colgroup> tag can help to ensure that the styling is consistent across all columns in the group. This can be particularly useful for large tables with many rows and columns, where it would be time-consuming to apply styles to each individual column.
- The <colgroup> tag can be used to add headers and other metadata to column groups in a table, making it easier for screen readers and other assistive technologies to interpret the table and convey its contents to users with disabilities.
- Using the <colgroup> tag to group columns together can help to reduce the overall size of the table markup, which can improve page load times and reduce server load.
- The <colgroup> tag can help to provide a clear and organized structure to a table’s markup, making it easier to read and understand for both authors and users.
