The sepia()CSS function converts the input image to sepia, giving it a warmer, more yellow/brown appearance. Its result is a <filter-function>.
The amount of the conversion, specified as a <number> or a <percentage>. A value of 100% is completely sepia, while a value of 0% leaves the input unchanged. Values between 0% and 100% are linear multipliers on the effect. The lacuna value for interpolation is 0.