Text on an image with vignette effect CSS - html

Question

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.
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.
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>

Answer 1

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>

Answer 2

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:
https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth
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;
}
}

Answer 3

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.