a:link etc etc che non và

[fabrrrri]

<div id="post"> <?php the_content(); ?> <p class="link">[url="link"]Mio link[/url]</p></div>

css:

#post { font-size: 12px; font-family: Verdana, Arial, Tahoma; color: #000000; text-decoration: none; line-height: 18px; text-align: justify; } 
#post img { margin: 5px 0px; } 
#post a { font-size: 12px; font-family: Verdana, Arial, Tahoma; color: #0A71DA; text-decoration: underline; } 

.link { padding-bottom: 5px; border-bottom: 1px dotted #509CEA; margin-bottom: 15px; margin-top:5px; text-align:center; }  
.link a  { font: bold 30px Verdana, Arial, Tahoma; color: #509CEA; text-decoration: none; } 

Perchè "link a" non và ? Lo stile del link cambia solo se altero "post a"