Essentially what you need to do is create a transparent border of 10px with a red box shadow.
img {
border: 10px solid transparent;
box-shadow: 0px 0px 15px 0px rgba(255,0,0,1);
}
Then set each of the images to the width % you want.
See this jsfiddle http://jsfiddle.net/TZh2Y/