Background image transparency with CSS3?

Question

Is there a way to add transparency to a background-image using CSS3?

Answer 1

Add the image to the HTML tag and add a background-color using rgba(0,0,0,[your opacity])

html {
    background:url('image.jpg') #303030; 
    background-size:cover;
}

body {
    background:rgba(0,0,0,0.7);
}