CSS for DIVS with dotted borders as in PSD

Hi, Attached is the PSD containing four blocks with grey dotted borders. I need the CSS amended to convert it to look as it is in the PSD. Below is the HTML with borders given but obviously they don't anywhere near to the PSD. If you know how to achieve this in CSS then please bid. ### EVENTS {#block_heading} ### BLOG {#block_heading} ### EVENTS {#block_heading} ### EVENTS {#H1}