Background

Question

how to make the background img blur ?

Answer 1

You can blur the background image this way with CSS, exemple:
.something {
background-image: url("image.png");
-webkit-filter: blur(5px);
-moz-filter: blur(5px);
-o-filter: blur(5px);
filter: blur(5px); }
The prefix -webkit, -moz, -o is to ensure that your effect will be work in many browsers.