I’m not sure how I arrived at this rule, but I’m really glad I did and I would likely never ever change it. The basic premise is that you should try and define all your margins in one direction. This means always use margin-bottom to push items down the page, and margin-left to push them across the page. I’m going to focus mainly on margin-bottom throughout this article as it’s the most obvious to explain, but this can be applied to both directions (top/bottom, right/left).

Kolber says this exercise is the best way to prevent and fix shoulder injuries. Since you perform it lying down, you can even do it as you lie on the floor and stream a movie. No excuses!

Note: Although it is common on the web, and is in some of the images below, you should never make visible form fields without a visible label.

But this also trickles down inside VMs. Working with Linux, i’ve found that keeping the system as pristine as possible after installation is a good thing. When working with Perl, I set the following objectives:

1. Leave the system Perl alone.
2. Install any Perl I choose.
   • And even switch between installed Perls
   • Either globally or on a per-project page
3. Manage Perl module dependencies within the project’s git repo.