Text on an image with vignette effect CSS

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I am trying to create a page banner which is an image with text over it. There are two things I am facing trouble with two things.

  1. I need a smooth vignette effect on these images so that the text is clearly visible. I have tried the following but am not happy with the end result. I would like to get something as shown in the following image which shows a kind of smooth transition.

  2. The text hides below the vignette effect. I tried using z-index but it does not work.

body {
  margin: 0px;
}

#page-banner img {
  width: 100%;
  object-fit: cover;
  height: 48vh;
}

#page-banner .vignette:after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  -webkit-box-shadow: inset 20em 5em 15em black;
  -moz-box-shadow: inset 20em 5em 15em black;
  box-shadow: inset 20em 5em 15em black;
  z-index: 0;
}

#page-banner .text {
  width: 50%;
  right: 50%;
  z-index: 1;
}

#page-banner .text-over-image {
  position: relative;
}

#page-banner .text-over-image p {
  font-size: 60px;
  color: white;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 15%;
  right: 45%;
  transform: translate(-10%, -50%);
}
<section id="page-banner">
  <div class="text-over-image vignette">
    <img src="https://wallpaperaccess.com/full/5117570.jpg">
    <div class="text">
      <p>I am trying to learn adding vignette to images</p>
    </div>
  </div>
</section>

enter image description here

3 Answers

In your example, you used:

#page-banner .vignette::after

but you could just use:

#page-banner .vignette::before

instead.

That would position the pseudo-element underneath the content of .vignette, rather than over the top of it.


Working Example:

body {
  margin: 0px;
}

#page-banner img {
  width: 100%;
  object-fit: cover;
  height: 100vh;
}

#page-banner .vignette::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 20em 5em 15em black;
  z-index: 0;
}

#page-banner .text {
  width: 50%;
  right: 50%;
  z-index: 1;
}

#page-banner .text-over-image {
  position: relative;
}

#page-banner .text-over-image p {
  font-size: 60px;
  color: white;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 15%;
  right: 45%;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.2);
  transform: translate(-10%, -50%);
}
<section id="page-banner">
  <div class="text-over-image vignette">
    <img src="https://wallpaperaccess.com/full/5117570.jpg">
    <div class="text">
      <p>I am trying to learn adding vignette to images</p>
    </div>
  </div>
</section>

You need change z-index: 1 to #page-banner .text-over-image p to show the text.

To simulate smooth effect I put an opacity property.

If you want a really smooth effecty try change your font or use font-smooth but this feature is non-standard:

body {
  margin: 0px;
}

#page-banner img {
  width: 100%;
  object-fit: cover;
  height: 48vh;
}

#page-banner .vignette:after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  -webkit-box-shadow: inset 20em 5em 15em black;
  -moz-box-shadow: inset 20em 5em 15em black;
  box-shadow: inset 20em 5em 15em black;
  z-index: 0;
}

#page-banner .text {
  width: 50%;
  right: 50%;
}

#page-banner .text-over-image {
  position: relative;
}

#page-banner .text-over-image p {
  z-index: 1;
  opacity: 0.88;
  font-size: 60px;
  color: white;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 15%;
  right: 45%;
  transform: translate(-10%, -50%);
  animation: fadeIn 8s infinite alternate;
}

@keyframes fadeIn {
  from {
    left: 13%;
    opacity: 0.69;
    color: white;
    
  }
  to {
    left: 18%;
    opacity: 0.88;
    color: whitesmoke;
    text-shadow: 2px 2px 8px gray;
  }
}
<section id="page-banner">
  <div class="text-over-image vignette">
    <img src="https://wallpaperaccess.com/full/5117570.jpg">
    <div class="text">
      <p>I am trying to learn adding vignette to images</p>
    </div>
  </div>
</section>

Update:

I put an animation suggestion using @keyframes alternating:

  • opacity, left and text-shadow values in 8s

@keyframes fadeIn {
  from {
    left: 16%;
    opacity: 0.69;
    text-shadow: 2px 2px 8px whitesmoke;
  }
  to {
    left: 18%;
    opacity: 0.88;
    text-shadow: 2px 2px 8px gray;
  }
}

Dont' use box-shadow. Instead give your ::after this:

background: hsla(0, 0%, 0%, 0.50);

then give your text z-index = 1;

Just play with your color's alpha to get the desired look.

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