Can we add an opacity filter to the background image?

Is there a way to add opacity to just the background image on my website?

I'm looking for a solution that applies the opacity solely to the image area.

Check out my JSFiddle for reference.

HTML:

<header class="main-header " style="background-image:url('http://cdn.c.photoshelter.com/img-get/I00004urs0axX2VI/s/860/860/0801A130.jpg');">

        <div class="sticky-header">
            <div class="row">
                <nav class="medium-10 columns primary menu">
                    <ul class="inline naked">
                        <li><a href="">test</a></li>
                    </ul>
                </nav>
            </div>
        </div>

CSS:

.sticky-header {
padding-top: 30px;
width: 100%;
margin: 0 auto;
position: fixed;
z-index: 1000;
background-color: #ffffff;
background-size: auto 100%;
border-bottom: 5px solid #f2f2f2;
top: 0;
left: 0;
}

.main-header {
width: 100%;
max-width: 1480px;
position: fixed;
background-image: url("http://cdn.c.photoshelter.com/img-get/I00004urs0axX2VI/s/860/860/0801A130.jpg");
background-position-y: -30px;
background-repeat: no-repeat;
background-size: auto 100%;
background-position: center top;
position: relative;
transition: background-position ease-in 0.3s;
height: 720px;
margin: 0 auto;
}

Appreciate any assistance!

Answer №1

Utilizing a Pseudo element is recommended when applying opacity to the background in CSS is not feasible.

.main-header {
height: 720px;
}

.sticky-header {
padding-top: 30px;
width: 100%;
margin: 0 auto;
position: fixed;
z-index: 1000;
background-color: #ffffff;
background-size: auto 100%;
border-bottom: 5px solid #f2f2f2;
top: 0;
left: 0;
}

.main-header {
width: 100%;
max-width: 1480px;
position: fixed;
background-position-y: -30px;
background-repeat: no-repeat;
background-size: auto 100%;
background-position: center top;
position: relative;
transition: background-position ease-in 0.3s;
height: 720px;
margin: 0 auto;
z-index:1
}

.main-header:before{
    position: absolute;
    content: '';
    width: 100%;
    height: 100%;
    background-image: url("http://cdn.c.photoshelter.com/img-get/I00004urs0axX2VI/s/860/860/0801A130.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    left:0;
    top: 0;
    z-index: 0;
    opacity: .4
}
<header class="main-header">
     
    <div class="sticky-header">
        <div class="row">
            <nav class="medium-10 columns primary menu">
                <ul class="inline naked">
                    <li><a href="">test</a></li>
                </ul>
            </nav>
        </div>
    </div>
</header>

Answer №2

Applying opacity to background images can be tricky. Opacity works best on actual HTML elements.

A solution is to create a div specifically for the background image without any content, and set the opacity on that div.

<div style="position:relative;">
    <div id="position:absolute; left:0;top:0;background" style="width:100%; height:100%; background-image:url(/path/to/img);opacity:0.6; z-index:1">
    </div>

    <div id="content" style="width:100%; height:100%; z-index:2"> 
        Your content here
    </div>
</div>

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