Then, you simple paste the code into the highlighted bar.

Here is the code in case you missed it earlier. Just copy and paste it into the Additional CSS area. Click Publish and you are done That's it! Make sure you include all the { symbols !!!

div[id*="jaaxy_plugin"] {
float: none !important;
border-width: 0 !important;
}
div[id*="jaaxy_plugin"] .plugin-container {
margin: 0 !important;
}

Here is the code pasted in the spot I had highlighted on the last page.