HTML – 如何从模糊背景图像中删除白色边框

<div class="BACkground-image"></div>

CSS,我尝试添加保证金：-10px但它不起作用

.BACkground-image {
  BACkground: no-repeat center center fixed; 
   BACkground-image: url('http://www.hdpaperz.com/wallpaper/original/windows-8-wallpapers-2560x1600-2311_1.jpg') ; 
  BACkground-size: cover;
  display: block;
  height: 100%;
  left: -5px;
  top:-5px;
  bottom:-5px;
  position: fixed;
  right: -5px;
  z-index: 1;
  margin:0px auto;
  -webkit-filter: blur(5pX);
  -moz-filter: blur(5pX);
  -o-filter: blur(5pX);
  -ms-filter: blur(5pX);
  filter: blur(5pX);
  -webkit-BACkground-size: cover;
  -moz-BACkground-size: cover;
  -o-BACkground-size: cover;

 }

http://jsfiddle.net/maio/8wq132nd/1/