This layer is defined with a <LAYER> tag.
You see that the background image is applied to the rectangular region occupied by the layer. The height of the filled-in area is determined by the height value.
This layer is defined in CSS syntax.
The style definition sets the background-image property. The height of the filled-in area is determined by the actual content.
This layer is defined in CSS syntax.
The style definition sets the background-image property. The style definition also includes a value for border-width and border color. The height of the filled-in area is determined by the actual content.
This layer is defined in CSS syntax. The style definition includes a value for layer-background-image. The height of the filled-in area is determined by the height value.