Edit CSS file in wordpress theme

/*------HEADER------*/
 
.head-row1 { height:90px; width:100%; overflow:hidden;}
.head-row1 .col1 { float:left; }
.head-row1 .col2 { float:right;}
 
.head-row2 { height:45px; width:100%;background:none; margin-bottom:11px;}
.head-row2 .col1 { float:left; width:721px;}
.head-row2 .col2 { float:left; width: 230px; margin: 7px 0 0 0;}
 
.head-row3 { width:100%;}
 
.head-row4 { height:; width:100%;}
 
.logo { margin:7px 20px 0px 0; float:left;}
h1.site-name { font-size:32px; padding:40px 10px 0px 30px; font-family:"Trebuchet MS"; text-transform:capitalize; font-weight:bold;}
h1.site-name a { color:#FFFFFF; text-decoration:none; font-weight:normal; line-height:30px;}
.slogan { padding:4px 0px 0px 12px; color:#FFFFFF; font-size:12px; text-transform:none; float:left;}
.slogan-img { margin:71px 0px 21px 0px;}
 
.wrapper-top-menu {padding:1px 0 0 5px;}
ul.menu-nav {margin:0px; padding:0; list-style:none; text-align:center;}
ul.menu-nav li { float:left; padding:0px 1px 0px 0px; background:url(images/bg-li000.gif) no-repeat right top}
ul.menu-nav li li { background:none;}
ul.menu-nav li a { color:#eee; text-decoration:none; font-size:20px; display:block; padding:15px; text-transform:uppercase;}
ul.menu-nav li.active a, ul.menu-nav li a:hover { background:url(images/bg-li-ac.gif) top repeat-x; text-decoration:underline; font-style: inherit;}
ul.menu-nav li.first a:hover, ul.menu-nav li.first a.active{ background:url(images/bg-li-fi.png) no-repeat right top}
 
div.menu-nav {padding:1px 0 0 5px;}
div.menu-nav ul {margin:0px; padding:0; list-style:none; text-align:center;}
div.menu-nav ulli { float:left; padding:0px 1px 0px 0px; background:url(images/bg-li000.gif) no-repeat right top}
div.menu-nav ul li li { background:none;}
div.menu-nav ul li a { color:#eee; text-decoration:none; font-size:20px; display:block; padding:15px; text-transform:uppercase;}
div.menu-nav ul li.active a, div.menu-nav ulli a:hover { background:url(images/bg-li-ac.gif) top repeat-x; text-decoration:underline; font-style: inherit;}
div.menu-nav ul li.first a:hover, div.menu-nav ul li.first a.active{ background:url(images/bg-li-fi.png) no-repeat right top}
 
/* footer */
#footer { background:url(images/bg-footer.jpg) repeat-x 0 0; color:#373737; font-size:10px; font-weight:normal; text-align:center; width:100%; overflow:hidden; text-transform:uppercase;}
.foot { text-align:center; margin:0 auto; width:980px; padding:30px 0px 30px 0px;}
#footer a { color:#666; text-decoration:none; list-style-type:}
#footer a:hover{ text-decoration:underline;}
#footer .foot span { padding-left:0px; line-height:20px;}
#footer .foot div.tm {padding-left:0px;}
/* footer end */