What gradient am I missing?

问题

csslint.net is giving me this error:

Missing vendor-prefixed CSS gradients for Old Webkit (Safari 4+, Chrome), Opera 11.1+.

.ui-dialog, .grey_box {
  background:  -moz-linear-gradient(top, #fefefe, #dddddd);
  background:  -webkit-linear-gradient(top, #fefefe, #dddddd);
  background:  -ms-linear-gradient(top, #fefefe, #dddddd);
}

回答1:

You need to add these two additional

.ui-dialog, .grey_box {
  background:  -webkit-gradient(top, #fefefe, #dddddd);
  background:  -o-linear-gradient(top, #fefefe, #dddddd);
  background:  -moz-linear-gradient(top, #fefefe, #dddddd);
  background:  -webkit-linear-gradient(top, #fefefe, #dddddd);
  background:  -ms-linear-gradient(top, #fefefe, #dddddd);
}

来源：https://stackoverflow.com/questions/39857551/what-gradient-am-i-missing