Hi - can anyone perhaps see why my Subscribe box at the top left of this page does not recognize any line height in all browsers?

http://www.greensmoothie.com/1cde/1mst5.php

I've tried adding font:0.9em/1.3 even font:0.9em/3 to .ebk p, but all browsers ignore it, and FF alone shows a small space between lines. All other browsers squash the lines closely together.

.ebk p {
padding:0 6px 3px;
margin:3px 0;
font:0.9em Arial,sans-serif; color:#006600; text-align:left;
}

I've tried reducing the text in the box to fewer words but that also makes no difference.

thank you for your kind help - Val