Get started with the building blocks of HTML, the markup language at the core of the internet.

Web Essentials

HTML is used to design standard web pages by using multiple tags and it can be used with multiple assistive languages like CSS and Javascript. In this module, you will learn about HTML tags from scratch. This module will also teach you how to code and create your own web pages using HTML in this interactive web development module for beginners.

Hyper Text Markup Language (HTML)

The `colgroup` tag in HTML is used to format a group of columns in a table. It is used to set the properties of the columns altogether instead of manipulating individual ones. 

>The `colgroup` tag is used inside the `table` element and along with the `col` tag in HTML.

The illustration below shows how the `colgroup` tag works in HTML:

## Syntax

The syntax of `colgroup` tag is as follows:

```HTML
<colgroup> 
<col attribute = value> 
</colgroup>
```

We begin by opening the tags using the `<>` symbol. In between, we write the keyword`colgroup`. We then close the tags using the `</>` symbol. Once again, we will place the name of our tag in-between `<>` and after the `/` symbol. `colgroup` is used along with the `col` tag. The `col` tag has the following syntax:

```HTML
<col attribute = value>
```

We open the tags using the `<>` symbol. The keyword `col` and related attributes come within.

## Attributes

Style attributes can be placed within the `col` tag. Some prominent ones are listed below:

| Attribute  | Purpose  |
| - | - |
| `span`  | Used to indicate the number of consecutive columns to apply the specified properties on. By default, the value is 1.   |
| `background-color` | Changes the background color of the columns.  |
|  `width` |  Changes the width of the column. Value in pixels |
| `height`  |  Changes the height of the column. Value in pixels |
 
## Example

The following code snippet shows how we can use the `colgroup` tag in HTML:

# Syntax

The syntax of `colgroup` tag is as follows:

```HTML
<colgroup> 
<col attribute = value> 
</colgroup>
```

We begin by opening the tags using the `<>` symbol. In between, we write the keyword`colgroup`. We then close the tags using the `</>` symbol. Once again, we will place the name of our tag in-between `<>` and after the `/` symbol. `colgroup` is used along with the `col` tag. The `col` tag has the following syntax:

```HTML
<col attribute = value>
```

We open the tags using the `<>` symbol. The keyword `col` and related attributes come within.

# Attributes

Style attributes can be placed within the `col` tag. Some prominent ones are listed below:

| Attribute  | Purpose  |
| - | - |
| `span`  | Used to indicate the number of consecutive columns to apply the specified properties on. By default, the value is 1.   |
| `background-color` | Changes the background color of the columns.  |
|  `width` |  Changes the width of the column. Value in pixels |
| `height`  |  Changes the height of the column. Value in pixels |
 
# Example

The following code snippet shows how we can use the `colgroup` tag in HTML:

Before We Begin

HTML Tags

Semantic Web Page Layout with HTML

Self Evaluation

Conclusion

<colgroup>

Syntax