页面变灰

html,
body,
#app,
.wrapper {
    width: 100%;
    height: 100%;
    /* overflow: hidden; */
    -webkit-filter : grayscale(100%);
-moz-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: grayscale(100%);
filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
}