Archived topic

How to change opacity of background image in header element

5 replies · Started by mkjj on April 10, 2023

Viewing posts 1–6 of 6

April 10, 2023 at 1:28 am #2603703

I'm ususally not a big fan of text on a fancy background image. It's hard to get it right on mobile devices. Unfortunately, my customer wants it on this site. On small devices I have to change the opacity of the background to keep the text readable. As far as I know, you can't change the opacity of a background image using CSS. As a workaround I use a media query that loads a modified image for mobile devices. It's working, but not very elegant. Would you have a better solution for this? Or would you conside this an acceptable solution?

HTML in the hero section is pretty simple:

<div class="hero">
<h1>headline<br>
headline</h1>
<p>some text<br>
some text</p>
<p><a class="button" href="https://beyond-connect.com/anmeldung/">button</a></p>
</div>

Nothing fancy in the CSS:

.page-hero {
    background-image: url(https://beyond-connect.com/wp-content/uploads/hero1.jpg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    padding-top: 10%;
    padding-bottom: 15%;
}

For mobile devices I modified the padding a little bit, but that's it.

@media (max-width: 1080px) {
  .hero {
    margin-left: 0;
    text-align: center;
  }
  .page-hero {
    padding-top: 6%;
    padding-bottom: 6%;
    background-image: url("https://beyond-connect.com/wp-content/uploads/hero-mobil.jpg");
  }
}

Thanks, Mike

April 10, 2023 at 1:36 am #2603712

Hi Mkjj,

That solution is alright.

You can also add .page-hero::after element and add the opacity through that. This is the more common solution I see.

If you use a GB Container Block instead through a Block Element - Page Hero, you can set that up with no code needed as well. Reference: https://docs.generateblocks.com/article/backgrounds-options-overview/#image

April 10, 2023 at 1:56 am #2603737

Thanks, Fernando. A pseudo-element was my first idea, but it didn't work. For test purposes, I've just removed the background image and added this CSS, but the image does not show:

.page-hero::after {
    content: '';
    background-image: url(https://beyond-connect.com/wp-content/uploads/hero1.jpg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    display: inline-block;
}

I don't use GB. I'm not a big fan of Gutenberg. :-)

April 10, 2023 at 4:01 am #2603872

Hi there,

try this CSS:

.page-hero::after {
    content: '';
    background-image: url(https://beyond-connect.com/wp-content/uploads/hero1.jpg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    position: absolute;
    width: 100%;
    display: inline-block;
    inset: 0;
    z-index: -1;
    left: 0;
}

April 10, 2023 at 4:17 am #2603891

Oh my, I'm such an idiot! Why did I forget the z-index? Works like a charm! Thank you, David. On Easter Monday!! :-)

As always: absolutely awesome support!

April 10, 2023 at 5:25 am #2603962

Glad to be of help :)

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