Problema de estilo de categoría en plantilla WordPress: Ayuda con CSS

/*
Theme Name: XXXXX
Theme URI: http://www.peliculas-onlineflv.com
Description: Theme exclusivo de ClonesWP.
Author: ClonesWP
Author URI: http://www.cloneswp.com/
Version: 1.0
License: GNU General Public License
License URI: Puede utilizarlo tanto en lo personal como comercialmente, es libre de editarlo a su gusto sin necesidad de referenciar al autor.
License: GNU General Public License
License URI: license.txt
Tags: wordpress
*/
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{border:0;outline:0;font-style:normal;font-size:100%;font-family:"Helvetica Neue", Arial, Helvetica, Geneva, sans-serif;vertical-align:baseline;margin:0;padding:0}
article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}
body{font: 75%/150% "Trebuchet MS", Tahoma, Arial;color: #333333;background: #fff url(https://dl.dropbox.com/u/31184635/Blog%20Imagenes/Img_twilight/backfnd.jpg) fixed;margin: 0px;padding: 0;}
ol,ul{list-style:none}
blockquote,q{quotes:none}
blockquote:before,blockquote:after,q:before,q:after{content:""}
table{border-collapse:collapse;border-spacing:0}
img{border:0}
a {color: #1CA2DE;text-decoration: none;}
a:visited {color: #1CA2DE;text-decoration: none;}
a:hover {color: #83C21F;text-decoration: none;}
img {border: none;}
p {padding: 0px 0px 15px;margin: 0px;}
h1,h2,h3,h4,h5,h6{font-weight:400;font-family:arial}
h1 {margin:0px;background: url(http://bp0.blogger.com/_Zuzii37VUO4/RkVF4OMBTtI/AAAAAAAABD4/zr1GkY7qJ6o/s1600/header-icon.gif) no-repeat;padding-left: 70px;height: 60px;font: bold 36px/100% "Trebuchet MS", Tahoma, Arial;color: #c9eefe;}

h1 a, h1 a:visited{color: #c9eefe;text-decoration: none;}

h1 a:hover{color: #ffffff;text-decoration: none;}

h2 {color: #83C21F;margin: 0px 0px 2px;border-bottom: 1px dotted #CCCCCC;letter-spacing: -1px;font: normal 190%/100% "Trebuchet MS", Tahoma, Arial;padding-bottom: 3px;}

h2 a, h2 a:visited {color: #83C21F;text-decoration: none;}

h2 a:hover {color: #FF6600;text-decoration: none;}

h3 {font: normal 140%/100% "Trebuchet MS", Tahoma, Arial;color: #758d38;margin: 10px 0px 5px;}

h4 {font: normal 130%/100% "Trebuchet MS", Tahoma, Arial;color: #758d38;margin: 10px 0px 5px;}

code,kbd,pre,samp,tt{font-family:menlo, monaco, consolas, "lucida console", "courier new", courier, monospace;line-height:1.3}

hr{border:0;color:#000;background-color:#000;height:1px;margin:0;padding:0}

.clearfix:after{clear:both}
.clearfix:before,.clearfix:after{content:" ";display:block;height:0;visibility:hidden}
.hidden{display:none}
.alignleft{display:inline;float:left;margin-right:1.625em}
.alignright{display:inline;float:right;margin-left:1.625em}
.aligncenter{clear:both;display:block;margin-left:auto;margin-right:auto}
.left-sidebar #primary{float:right;width:100%;margin:0 0 0 -26.4%}
.left-sidebar #content{width:58.4%;margin:0 7.6% 0 34%}
.left-sidebar #secondary{float:left;margin-left:7.6%;margin-right:0;width:18.8%}
dl{margin:0 1.625em}
dd{margin-bottom:1.625em}
blockquote{font-family:Georgia, "Bitstream Charter", serif;font-style:italic;font-weight:400;margin:0 3em}
blockquote em,blockquote i,blockquote cite{font-style:normal}
blockquote cite{color:#666;font:12px "Helvetica Neue", Helvetica, Arial, sans-serif;font-weight:300;letter-spacing:.05em;text-transform:uppercase}
pre{background:#f4f4f4;font:13px "Courier 10 Pitch", Courier, monospace;line-height:1.5;margin-bottom:1.625em;overflow:auto;padding:.75em 1.625em}
code,kbd,samp,var{font:13px Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace}
abbr,acronym,dfn{border-bottom:1px dotted #666;cursor:help}
address{display:block;margin:0 0 1.625em}
ins{background:#fff9c0;text-decoration:none}
sup,sub{font-size:10px;height:0;line-height:1;position:relative;vertical-align:baseline}
sup{bottom:1ex}
sub{top:.5ex}
small{font-size:smaller}
:focus{outline:none}
a:visited,a:active{color:#044380}
em,i,blockquote,q,cite,cite,em,i{font-style:italic}
strong,b,dt,strong{font-weight:700}
#footerbg{clear:both;background:#83C21F;border-top:5px solid #A2D157;padding-bottom:20px;height:43px}
#footer-wrapper{width:940px;color:#E3F7C3;line-height:130%;margin:20px auto 0}
#search{float:right;background:#83C21F;width:220px;text-align:center;margin:10px}
#search #s,#sidebar #s{width:130px;height:20px;border:1px solid #4395BC;background:#FFF;margin-right:2px;color:#333;font-weight:400;font:bold 12px Arial, Helvetica, sans-serif;vertical-align:middle;padding:3px 5px 0}
#searchsubmit{background:#A2D157;border:none;height:25px;font:bold 12px Arial, Helvetica, sans-serif;color:#FFF;vertical-align:middle}
#header-wrapper{position:relative;width:940px;margin:0 auto}
#header-inner{background:#FFF url(https://dl.dropbox.com/u/31184635/Blog%20Imagenes/Img_twilight/head.jpg) no-repeat center;color:#FFF;height:173px;position:relative;border-radius:10px}
#outer-wrapper{width:940px;background:#fff;border-radius:10px;margin:0 auto}
#wrap2{width:940px;margin:10px auto}
.clear{clear:both}
#main-wrapper{float:left;width:600px;overflow:hidden;padding:0 0 7px 15px}
.post{clear:both;padding-top:15px}

.post h2{float:left;width:100%;border-bottom:1px dotted #CCC;letter-spacing:-1px;font:normal 190%/100% "Trebuchet MS", Tahoma, Arial;padding-bottom:3px;margin:0 0 2px}

.post h2 a:hover {
color: #83C21F;
text-decoration: none;
}


.post h2 a{color:#1CA2DE;text-decoration:none}
.post-body{clear:both;padding-top:10px;font-size:13px;text-align:justify}
.post-body figure{float:left;padding:0 10px 5px 0}
.single{font-family:'Trebuchet MS', Arial, 'Lucida Sans Unicode', Tahoma, sans-serif;font-size:16px}

#sidebar-wrapper{float:right;width:300px;color:#666;background-color:#ddf1ff;overflow:hidden;padding:20px 10px 20px 5px}

#sidebar #s{width:220px!important}

#sidebar .widget{margin-bottom:10px}

#sidebar .widget h3{font:lighter 1.5em/1em "trebuchet MS", "Lucida Sans Unicode", Georgia;color:#1CA2DE;border-bottom:1px dotted #65BEFF;margin-bottom:5px}

#sidebar .widget li{line-height:1.5em;height:20px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;background-image:url(images/icono%20facebook.png);background-repeat:no-repeat;margin:0;padding:0 0 0 25px}

#sidebar .widget li a{color:#999;text-decoration:none}
#sidebar .widget li:hover{background-color:#c7e6fb}
#sidebar .widget li a:hover{color:#F60;text-decoration:none}
.widget_tag_cloud a{float:left;font-size:14px!important;margin:3px;padding:3px 5px}
.navigation{float:right}
.pagenavi{line-height:30px;text-align:right;font-size:18px;font-weight:700;float:left;margin:20px 10px 10px}
.pagenavi a,.pagenavi .current{float:left;display:inline-block;margin:0 1px}
.pagenavi .current{background:#A2D1CC!important}
#topbar{background:#83C21F;width:100%;height:50px;border-bottom:5px solid #A2D157;margin-bottom:8px}
#navi{width:940px;text-align:center;line-height:normal;margin:0 auto}
#navi .menu ul,#navi .menu{list-style:none;padding-left:5px;float:left;padding-top:5px}
#navi .menu li{float:left;white-space:nowrap;padding-right:.75em;background:none;margin:0 3px}
#navi .menu li a,.pagenavi a,.pagenavi .current{color:#FFF;background:#A2D157;display:block;text-decoration:none;font:bold 20px Arial, Helvetica, sans-serif;line-height:25px;padding:0 10px}

[COLOR=#000000]#sidebar .widget h3{font:lighter 1.5em/1em "trebuchet MS", "Lucida Sans Unicode", Georgia;color:#1CA2DE;border-bottom:1px dotted #65BEFF;margin-bottom:5px}