how to blur background in css code example

Example 1: how to blur background color in css

background: rgba(255,255,255,0.5);
backdrop-filter: blur(5px);

Example 2: 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 3: how to blur the background image in html

.bg-image {
    /* The image used */
    background-image: url("photographer.jpg");

    /* Add the blur effect */
    filter: blur(8px);
	-webkit-filter: blur(8px);

	height: 100%;
    background-position: center;
}

Example 4: image blur css

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

Example 5: 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 6: add blur background css

backdrop-filter: blur(5px);