You need to place #inside_menucard_bottom just above the closing div of #inside_menucard_main. Then set #inside_menucard_bottom to:
#inside_menucard_bottom{
clear:both;
}
i.e.
<div class="inside_menucard_main">
<div class="inside_menucard_list">
</div>
<div class="inside_menucard_bottom"></div>
</div>
I haven't tested it but it should do the job.....