What is the best way to adjust the transparency of the document.body?

Is it possible to set the body of a website to have a low opacity while keeping a popup at full opacity to make it stand out?

I attempted to specify the popup with opacity: 1 !important; but it didn't work as expected. Can you help me figure out how to achieve this effect?

You can view my attempt on JSFiddle here: https://jsfiddle.net/80351/0xo10tjc/

I am aware that setting the opacity of an outer div to 0.2 achieves the desired effect, but I am curious if it can be done by directly changing the opacity of the body element.

javascripthtmlcssdocument-body

Answer №1

To achieve a full-height effect, you can specify a 100% height for both the html and body elements and then set a background color for a specific div.

html, 
body {
   height: 100%;
}

body{
  margin: 0;
  padding: 0;
}

.overlay {
  background-color: yellow;
  opacity: 0.2;
  width: 100%;
  height: 100%;
}

https://jsfiddle.net/0xo10tjc/4/

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