how to blur an image using css code example

Example 1: how to do a background blur in css

/* Answer to "blur behind element css" */

/*
	This blurs everything behind the element it's applied to
*/

backdrop-filter: blur(10px);

Example 2: image blur css

filter: blur(8px);
  -webkit-filter: blur(8px);

Example 3: blur css

.mydiv { filter: grayscale(50%) }

/* Graut alle Bilder um 50% aus und macht sie um 10px unscharf */
img {
  filter: grayscale(0.5) blur(10px);
}

Example 4: add blur background css

backdrop-filter: blur(5px);