I'm new to design, contrast and color concepts but I'm trying to get my programming code snippets to look crisp, clear and very legible, without hurting the eyes. I'm looking for a font that is ideal for programming code snippets in a blog. I'm looking for a free web safe font.

The background color of my page is almost white (#eee) and the code snippets will be wrapped in a container with the following CSS details

<div class="code-snippets">


.code-snippets {
   color: eee;
   padding: 20px;
   /*   font-family: ??? */

Any assistance will be greatly appreciated. Thanks in advance