: The standard Graphics Interchange Format used for simple web graphics. Common Use Cases

: Likely stands for "Background Stationery" or "Blue Spaced." dbl : Short for "Double" (referring to double spacing).

: Used as a repeating background to mimic physical notebook paper.

: Creating lines with linear-gradient to save bandwidth.

To use this as a repeating background in CSS, designers would typically use: background-image: url('bs-dbl.gif'); background-repeat: repeat; Modern Alternatives