Answers for "background image transparent in html"

css how to make background transparent

/* Use RGBA */
background-color: rgba(255, 255, 0, 0.75); /* Transparent Yellow */

transparent background css for image

background-color: rgba(255, 0, 0, 0.5);

Background image opacity CSS

div {
    opacity : 50%;
}

/* Use opacity to change the opacity of selected css */