how to increase brightness in css code example

Example 1: css brightness

/* 
In order to use CSS Brightness you need to use the Filter property 
You can use a percent or a decimal or an integer
*/
filter: brightness(100%); 
/* OR above 100% */
filter: brightness(200%);

Example 2: brightness css

brightness(0%)   /* Completely black */
brightness(0.4)  /* 40% brightness */
brightness(1)    /* No effect */
brightness(200%) /* Double brightness */