Layer 0

This layer is defined with a <LAYER> tag.

You see that the background color is applied to the rectangular region occupied by the layer. The height of the colored area is determined by the height value.

Layer 1

This layer is defined in CSS syntax.

The style definition sets the position and background color, but doesn't set any values for border characteristics.

Layer 2

This layer is defined in CSS syntax. The style definition includes a value for border-width. The height of the colored area is determined by the actual content.

Layer 3

This layer is defined in CSS syntax. The style definition includes a value for layer-background-color. The height of the colored area is determined by the height value.