Today I needed to reduce the padding of my current position 0 (above position 1 and content). It's set to 60 above and 60 below by default, which eats up a lot of real estate. Especially if you just want to show an alert message, a banner or something similar. All you have to do is add this code to your /templates/purity_iii/css/custom.css file. Adjust as necessary.
.t3-sl {
padding-bottom: 20px;
padding-top: 15px;
}
)