Might I suggest altering the current way that Code is displayed when using the backticks?
It seems that it would work a lot better with this Fixed Width layout if the code was in a fixed width div that could scroll left or right if it went out of the bounds of the post area. Too often I see long lines of code that go out of the site design bounds. I guess it isn't I huge problem, but I just thought I would suggest a simple fix.
.codeclass {
background-color: #C0C0C0;
width: 500px; /* whatever the width of the main content area */
overflow: auto;
}