Final answer:
In order to decrease the background image brightness in CSS, use the filter property with the brightness value. This technique is valuable for achieving diverse visual effects.
Step-by-step explanation:
In order to reduce the background image brightness in CSS, leverage the filter property by setting the brightness value.
The brightness scale ranges from 0 to 1, wherein 0 signifies complete darkness, and 1 retains the original brightness.
In the provided example: background-image { filter: brightness(0.5);}
This CSS rule applies a brightness filter of 0.5 to the specified element with the class "background-image."
Consequently, the background image's brightness is diminished to half of its original intensity, creating a visually subdued or darker appearance.
The filter property, an integral part of CSS3, facilitates dynamic adjustments to various visual aspects, offering a versatile mechanism to manipulate the rendering of elements on a webpage.
This technique is valuable for achieving diverse visual effects by seamlessly modifying the brightness of background images through a simple and effective CSS declaration.