A newbie here so thanks for your help.
How do I code the css for this.
An image which has a thick 5-10px border in 50%-ish opaque white, showing the image underneath the border but also having the inner and outer border of the opaque white border in a dark grey.
I want to use this in Wordpress so the novice who will be updating her site only has to add a class to an image for the effect to take place. See this example done in Photoshop (she has no Photoshop skills at all!!!)