Apply Blur Effect to Parent Container Only

Apply blur effect to parent container only

Instead of blurring the whole container (which will always affect all descendants), you can blur direct children and define exceptions using the pseudo class :not(selector):

.container {
  width: 900px;
  margin: 0 auto;  
}

.box {
  padding: 40px 1px;
  margin: 0 auto;
  width: 500px;
  background: gray; 
  text-align:center;
}

.container:focus-within>*:not(.box, input) {
  filter: blur(4px);
}

<div class="container">
  <p>some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again</p>
  <div class="box">
    <div>
      <input >
      <input >
    </div>
  </div>
  <p>some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again some text again</p>
  <input >
</div>

How to blur(css) div without blur child element

How to disable blur on child element?

.enableBlur>* {  filter: blur(1.2px);}
.disableBlur {  filter: blur(0);}

<div class="enableBlur">  <hr>  qqqqq<br>  <span>qqqqq</span><br>  <hr  class="disableBlur">  <div>aaaaa</div>  <div>bbbbb</div>  <div class="disableBlur">DDDDD</div>  <hr>  <img src="https://lh5.googleusercontent.com/-n8FG4f09-ug/AAAAAAAAAAI/AAAAAAAACmA/ldtxmWX1SyY/photo.jpg?sz=48">  <img class="disableBlur" src="https://lh5.googleusercontent.com/-n8FG4f09-ug/AAAAAAAAAAI/AAAAAAAACmA/ldtxmWX1SyY/photo.jpg?sz=48"></div>

CSS Blur filter within container without clipping

One idea is to duplicate the image and consider a blurred version at the bottom of the one that you will blur on hover. This will reduce the bad effect of seing the background.

#container {  position: relative;  width: 200px;  height: 200px;  overflow: hidden;  margin: auto;  background-color: red;}
#container > div {  position:absolute;  width: 140%;  height: 140%;  left: -20%;  top: -20%;  background-size:0;}#container > div:before,#container > div:after{   content:"";   position:absolute;   top:0;   left:0;   right:0;   bottom:0;   background-image:inherit;   background-size:cover;   transition:filter 1s;  transition-timing-function: ease-out;}#container> div:before,#container:hover > div:after {  filter: blur(30px);}

<div id='container'>  <div style="background-image:url(https://i.chzbgr.com/full/9112752128/h94C6655E/)"></div></div>

How can I blur everything around an element with CSS?

A backdrop-filter solved this issue, thank you @Sheraff and @epascarello 23

CSS blur on background image but not on content

You could overlay one element above the blurred element like so

DEMO

div {
    position: absolute;
    left:0;
    top: 0;
}
p {
    position: absolute;
    left:0;
    top: 0;
}

CSS blur property only for background-image

I got your Codepen to work with the following CSS:

#home:before{
    content: ""; /* CHANGE HERE! */
    position: absolute; /* CHANGE HERE! */
    z-index: -1; /* CHANGE HERE! */

    display: block;
    background:url('http://666a658c624a3c03a6b2-25cda059d975d2f318c03e90bcf17c40.r92.cf1.rackcdn.com/unsplash_527bf56961712_1.JPG') no-repeat;
    background-size: cover;
    -webkit-filter: blur(5px);
    -moz-filter: blur(5px);
    -o-filter: blur(5px);
    -ms-filter: blur(5px);
    filter: blur(5px);
    width: 100%;
    height: 1080px;
}
.home{    
  text-align:center;
  z-index: 0; /* CHANGE HERE! */
}

Add the ':before' pseudo-element to specify that content be inserted before the element selected (#home).

Setting position to absolute and changing the z-indices are important here since we have to do some rearranging of the elements.

More info about :before pseudo-element

https://developer.mozilla.org/en-US/docs/Web/CSS/::before

More info about z-index:

http://www.w3schools.com/cssref/pr_pos_z-index.asp

Disable Blur filter on child containers

A few notes:

• there is no background HTML tag,
• when you are applying filters remember to not only use the -webkit-
• there is no font-face attribute to declare the font you are using, instead you should use font-family

With this in mind, a solution for your problem is creating a empty child div and applying the filter to that same empty div which must have a lower z-index then its siblings (as you already had)

Here is a snippet:

@font-face {  font-family: "Candy";  src: url('font/Candy.otf') format("opentype");}@font-face {  font-family: "DancingScript";  src: url('font/DancingScript.ttf') format("truetype");}body {  margin: 0;  padding: 0;}div {  position: absolute;  background: url("http://rusticrentals.oldtreasuresfurniture.com/images/cover_page.jpg") no-repeat;  display: block;  height: 100%;  width: 100%;  z-index: 0;  -moz-filter: blur(10px);  -o-filter: blur(10px);  -ms-filter: blur(10px);  filter: blur(10px);}
header {  font-family: "Candy";  font-size: 150px;  text-align: center;  color: #FFF;}nav {  color: #FFF;  font-family: "DancingScript";  font-size: 25px;}nav ul {  list-style: none;  margin: 0;  padding: 0;}nav li {  display: inline-block;}header,nav {  display: block;  position: relative;  z-index: 9999;}

<main>  <div></div>  <header>Rustic Rentals</header>  <nav>    <ul>      <li>Rentals</li>      <li>Sales</li>      <li>Contact</li>    </ul>  </nav></main>

Parent element backdrop-filter does not apply for its child

You should avoid applying backdrop-filter to a parent element of the sub menu. And idea is to consider a pseudo element where you can have the filter:

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 50px;
  background: hsla(0, 0%, 100%, 80%);
  border-bottom: 1px solid hsla(0, 0%, 0%, 10%);
  z-index: 1;
}
nav:before {
  content:"";
  position:absolute;
  z-index:-1;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  top:0;
  left:0;
  right:0;
  bottom:0;
}
nav ul {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav li {
  position: relative;
  margin: 0 20px;
  height: 50px;
  line-height: 50px;
}

nav li ul {
  position: absolute;
  top: 50px;
  left: 0;
  flex-direction: column;
  align-items: stretch;
  width: 200px;
  background: hsla(0, 0%, 100%, 80%);
  opacity: 0;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  pointer-events: none;
}

nav li:hover ul {
  opacity: 1;
  pointer-events: all;
}

nav li li {
  margin: 0;
  height: 30px;
  line-height: 30px;
}

<nav>
  <ul>
    <li>Nav 1</li>
    <li>Nav 2</li>
    <li>Nav 3
      <ul>
        <li>Nav 3-1</li>
        <li>Nav 3-2</li>
        <li>Nav 3-3</li>
      </ul>
    </li>
  </ul>
</nav>

<main>

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</main>

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