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                    <h1>Clickable Title for the Section</h1>
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Allowed CSS Properties

This section lists all the CSS properties and their permissible values that are allowed through the validator, based on the original XML file.

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1. General Properties

1.1 position

• Allowed Values:

  • relative, absolute, static, inherit.

1.2 border-radius

• Allowed Values:

  • Length values (e.g., px, em, %).

1.3 opacity

• Allowed Values:

  • Numbers (0.0–1.0) or percentage values.

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2. Background Properties

2.1 background

• Description: Shorthand for other background-related properties.

• Allowed Sub-Properties:

  • background-color

  • background-image

  • background-repeat

  • background-attachment

  • background-position

2.2 background-attachment

• Allowed Values:

  • scroll, fixed, inherit.

2.3 background-color

• Allowed Values:

  • Named colours (e.g., red, blue).

  • Hex codes (e.g., #ff0000, #fff).

  • RGB values (e.g., rgb(255, 0, 0)).

  • transparent, inherit.

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3. Text and Visual Properties

3.1 color

• Allowed Values:

  • Named colours (e.g., red, blue).

  • Hex codes (e.g., #ffffff, #000).

  • RGB values (e.g., rgb(255, 0, 0)).

  • System colours.

3.2 text-shadow

• Allowed Values:

  • none, inherit.

  • Length values for offsets and colour values for shadows.

3.3 letter-spacing

• Allowed Values:

  • normal, inherit, length values.

3.4 line-height

• Allowed Values:

  • normal, inherit, number, length, or percentage.

3.5 word-spacing

• Allowed Values:

  • normal, inherit, length values.

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4. Box Model Properties

4.1 margin

• Allowed Values:

  • auto, inherit, positive lengths or percentages.

4.2 border-spacing

• Allowed Values:

  • inherit, lengths (positive only).

4.3 clip

• Allowed Values:

  • auto, inherit.

4.4 overflow

• Allowed Values:

  • visible, hidden, scroll, inherit.

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5. List and Display Properties

5.1 list-style-type

• Allowed Values:

  • disc, circle, square, decimal, lower-roman, upper-roman.

5.2 list-style-position

• Allowed Values:

  • inside, outside, inherit.

5.3 list-style-image

• Allowed Values:

  • none, inherit.

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6. Interactive and Cursor Properties

6.1 cursor

• Allowed Values:

  • auto, pointer, move, text, default, inherit.

6.2 outline-color

• Allowed Values:

  • Colour values, invert, inherit.

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This list represents all CSS properties and their values that the validator allows.