Gradient over img tag using css

Question

I want to place a gradient over an tag. src attribute of the tag is angular-item. For example:

Answer 1

I recommend you to set background-color:black; to your container and then set class img{opacity:0.4}. Then you will get the same effect as you got with

backgroundImage:linear-gradient(rgba(0, 0, 0, 0.8),rgba(0, 0, 0, 0.8),rgba(0, 0, 0, 0.8),rgba(0, 0, 0, 0.8)),url(img_url))

My example on Slide:

.Slide {
    position: relative;
    border: 1px solid blue;
    min-width: 100%;
    height: 100%;
    transition: 0.5s;
    background-color: rgb(0, 0, 0);
}

.Slide img{
    position: relative;
    border: 1px solid blue;
    min-width: 100%;
    height: 100%;
    transition: 0.5s;
    opacity: 0.4;
}