html中图片背景清除,HTML – 如何从模糊背景图像中删除白色边框

如何从背景图像中删除白色模糊边框.

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;

}