Answers for "css chane color opacity .opacity"

css opacity background color

background: rgba(255, 255, 255, 0.25);

background color transparent opacity css

/* css semi-transparent background color */
.bg-semi-transparent {
  background-color: #ffffff40!important;
  /* change numbers from 00 to 99 at last of hex code 
  for transpency you want. */
}