CSS opacity layer trouble [duplicate] - html

Question

This question already has answers here:
Making text background transparent but not text itself
(9 answers)
Closed 5 years ago.
I want the background to have an opacity of .8 but not affect the other elements on top. How can I do this?
HTML
<div id="background">
<div id="foreground">
<div class="row">
<div class="column">
<div class="card">
<img src="lee2.png" alt="Jane" style="width:200px; height:200px">
<div class="container">
<h2>Lee Hannigan</h2>
<p class="title">CEO & Founder</p>
<p>Some text that describes me lorem ipsum ipsum lorem.</p>
<p>lee#stokeddesigns.com</p>
<p><button class="button">Contact</button></p>
</div>
</div>
</div>
<div class="column">
<div class="card">
<img src="bosco2.png" alt="Mike" style="width:200px; height:200px;">
<div class="container">
<h2>Bosco</h2>
<p class="title">Lead Developer</p>
<p>Some text that describes me lorem ipsum ipsum lorem.</p>
<p>bosco#stokeddesigns.com</p>
<p><button class="button">Contact</button></p>
</div>
</div>
</div>
<div class="column">
<div class="card">
<img src="cat2.png" alt="John" style="width:200px;height:200px;">
<div class="container">
<h2>Caitriona Lyons</h2>
<p class="title">Designer</p>
<p>Some text that describes me lorem ipsum ipsum lorem.</p>
<p>cat#stokeddesigns.com</p>
<p><button class="button">Contact</button></p>
</div>
</div>
</div>
</div>
</div>
</div>
CSS
/* Three columns side by side */
.column {
float: left;
width: 25%;
margin-bottom: 16px;
margin-left:70px;
padding: 0 8px;
background-color: grey;
}
.card {
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
}
.container {
padding: 0 16px;
}
/* Clear floats */
.container::after, .row::after {
content: "";
clear: both;
display: table;
}
.title {
color: #453A3A;
}
.button {
border: none;
outline: 0;
display: inline-block;
padding: 8px;
color: white;
background-color: #000;
text-align: center;
cursor: pointer;
width: 100%;
}
.button:hover {
background-color: #555;
}
#background{
background-color: #ED9300;
opacity:0.8;
}
#foreground{
text-align: center;
margin-top: 100px;
padding: 50px;
}
This is what the page looks like now

Answer 1

Use rgba coloring for the orange stripe instead of opacity. So like this:
background-color: rgba(215, 130, 44, 0.8);
The 0.8 is the opacity wich can be between 0 and 1
Hope this helps!

Answer 2

Instead of using the opacity, change the background-color to an RGBA instead of a hex. While opacity makes all child elements see through, using an RGBA does not.