Front page opacity and slider

Hi can I change the opacity of the front page image in Astrid free? I want to make less darker.
Can I add a slider or a video and control the opacity of the front page instead of having a single image on the front page?

You can add this in a custom CSS plugin and adjust the 0.9 (opacity) value as needed:

.header-image::after {
    background-color: rgba(37, 46, 53, 0.9);

You can’t add a video or slider instead of the header I’m afraid, not unless you’re able to code it yourself.

Thank you that helps.

I’m using the theme Quill. I applied the css you have given. but it only worked on the headers of the other pages but not on the front page slider.

i’d appreciate if you can help.