Adding to the answer @ Piyush-Marvaniya
This is due to pixel rounding errors due to the percentage width. When fixed, you get a border similar to other browsers.
Here is a working example in Saf v5.0 (7533.16) / Win on jsfiddle . I was able to make it almost perfect, there is one pixel glitch in the lower boundary curve, but you need to understand it very carefully:
#bigdescription { width: 350px; border-style: solid; border-width: 87px 69px 76px 89px; -webkit-border-image: url(http://i.imgur.com/nJ71Mj5.png) 87 69 76 89 round; -moz-border-image: url(http://i.imgur.com/nJ71Mj5.png) 87 69 76 89 round; -o-border-image: url(http://i.imgur.com/nJ71Mj5.png) 87 69 76 89 round; border-image: url(http://i.imgur.com/nJ71Mj5.png) 87 69 76 89 round; }
Volker E.
source share