html - CSS Styles are not available on Firefox/IE -

i designed website using dreamviewer. styles applied webpage not available on firefox , ie, webpage displayed in plain html format. styles displayed in chrome.what reason , how can fix problem?

this stylesheet

*       { padding:0; margin:0; border:0; }  p   {  font-family:arial, helvetica, sans-serif; font-size:12px; color:#202020; line-height:180%;} h1, h2, h3, h4  { color:#00486a; font-family:arial, helvetica, sans-serif;} h1  { padding: 5px 5px 10px 0; font-size:24px;}  #wrapper    { margin:5px auto; width:1000px; background-color:#e6e6ff;} /*opacity:0.8; filter:alpha(opacity=80)}*/ body        { background:url(../img/backgrounds/sparkling_design-hd.jpg); background-repeat:repeat; } #logo       { float:left; margin:10px 5px 10px 20px; opacity:1; ;} #logo img   { opacity:1;}   #loginform  { float:right; padding: 20px 30px 10px 10px; margin: 10px 10px; } #loginform    { float:right; clear:both; } #loginform a:link       { font-family:arial, helvetica, sans-serif; font-size:12px; color:#666; text-decoration:none; } #loginform a:visited    { font-family:arial, helvetica, sans-serif; font-size:12px; color:#666; text-decoration:none; } #loginform a:active     { font-family:arial, helvetica, sans-serif; font-size:12px; color:#666; text-decoration:none; } #loginform a:hover      { font-family:arial, helvetica, sans-serif; font-size:12px; color:#999; text-decoration:none; text-decoration:underline;} #loginform a:focus      { font-family:arial, helvetica, sans-serif; font-size:12px; color:#666; text-decoration:none; } #loginform label    { float:left; width:70px; line-height: 100%; font-family:arial, helvetica, sans-serif; color:#666; font-size:12px; padding-top:5px;} #loginform input    { -webkit-border-radius:5px; border-radius:5px; width:150px; line-height:180%; height:20px; margin-bottom:10px; padding-right:5px; border:1px solid #999; padding-left: 8px;} #loginform input[type=submit]   { float:right; text-align:center; width:75px; background-color:#82bdff; font-family:arial, helvetica, sans-serif; font-size:12px; color:#333333; padding-left:8px; border: 1px #999999 solid; line-height:10px;} #loginform input[type=submit]:hover { background-color:#0060ff; color:#fff; }  #topnav     { clear:both; padding:10px 5px 10px 5px; margin:5px 5px 5px 20px; border-top:1px #b7b1fe solid; border-bottom:1px #b7b1fe solid;} #topnav ul li { display:inline; list-style-type:none; padding-left:20px; } #topnav ul li a:link    { font-family:'noto serif',arial, helvetica, sans-serif; font-size:14px; text-decoration:none; color:#00324a; font-weight:bold; } #topnav ul li a:active  { font-family:'noto serif',arial, helvetica, sans-serif; font-size:14px; text-decoration:none; color:#00324a; font-weight:bold; } #topnav ul li a:visited { font-family:'noto serif',arial, helvetica, sans-serif; font-size:14px; text-decoration:none; color:#00324a; font-weight:bold; } #topnav ul li a:hover   { font-family:'noto serif',arial, helvetica, sans-serif; font-size:14px; text-decoration:none; color:#7c96fc; font-weight:bold; } #topnav ul li a:focus   { font-family:'noto serif',arial, helvetica, sans-serif; font-size:14px; text-decoration:none; color:#00324a; font-weight:bold; }  #banner { clear:both; margin:5px 20px; width:960px;} #banner img { padding: 10px 0 10px 15px; }  #content    { float:left; width:700px; padding:10px 20px 10px 10px; margin:5px 5px 10px 10px; text-align:justify;} #rightpane  { float:right; width:220px; font-family:arial, helvetica, sans-serif; font-size:12px; line-height:180%; color:#202020; margin-right: 20px; background-color:#d9ddff; margin-bottom:20px; border:1px #0080c0 solid; border-radius:5px;}  #searchbox  { padding:10px 5px 10px 20px; margin-top:5px; } #search input[type=text]    { border-radius:5px; -webkit-border-radius:5px; height: 20px; width:150px; border:1px #0080c0 solid; margin-right: 5px; } #search input[type=submit]  { border-radius:5px; -webkit-border-radius:5px; -moz-border-radius:5px; height:25px; width:30px; border:1px #0080c0 solid; background-color:#82bdff; line-height:5px;} #search input[type=submit]:hover    { background-color:#0060ff; color:#fff; } #searchbox h3   { margin-left:0; }  /*---------------------signup page------------ */ #form-content   { border: 1px solid #666; float:left; width:690px; padding:10px 20px 10px 10px; margin:5px 15px 10px 20px; } #form-add-account input[type=text], #form-add-account input[type=password]  { width: 200px; height:20px; border-radius:5px; border: 1px #0080c0 solid;} #form-add-account label { font-family:arial, helvetica, sans-serif; font-size:12px; color:#666;} #form-add-account table { padding-top: 5px; } /*---------------------------------------------*/   #latest-posts   { padding:10px 5px 10px 10px; margin:20px 0; } #latest-posts ul    { list-style-type:none; padding-right:5px; padding-left:10px; line-height: 180%;} #latest-posts ul li a:link      {  text-decoration:none; color:#202020;} #latest-posts ul li a:active    {  text-decoration:none; color:#202020;} #latest-posts ul li a:visited   {  text-decoration:none; color:#202020;} #latest-posts ul li a:hover     {  text-decoration:none; color:#7c96fc; text-decoration:blink;} #latest-posts ul li a:focus     {  text-decoration:none; color:#202020;}  #recommendations    { padding:10px 5px 10px 10px; margin:20px 0; } #recommendations ul { list-style-type:none; padding-right:5px; padding-left:10px;} #recommendations ul li a:link       {  text-decoration:none; color:#202020;} #recommendations ul li a:active {  text-decoration:none; color:#202020;} #recommendations ul li a:visited    {  text-decoration:none; color:#202020;} #recommendations ul li a:hover      {  text-decoration:none; color:#7c96fc; text-decoration:blink;} #recommendations ul li a:focus      {  text-decoration:none; color:#202020;}  #footer     { clear:both; width:980px; margin:10px auto; border-top:2px #cccccc dotted; font-family:arial, helvetica, sans-serif; font-size:10px; color:#666;} #footer p   { font-family:arial, helvetica, sans-serif; font-size:10px; color:#666; } #footer h4  { font-size:11px; padding-bottom:4px; }  #social-media   { float:left; width:230px; margin:10px 0px 10px 30px;} #social-media ul    {  list-style-type:none; line-height:180%;} #social-media ul li a:link      {  text-decoration:none; color:#666;} #social-media ul li a:active        {  text-decoration:none; color:#666;} #social-media ul li a:visited   {  text-decoration:none; color:#666;} #social-media ul li a:hover     {  text-decoration:none; color:#7c96fc; text-decoration:blink;} #social-media ul li a:focus     {  text-decoration:none; color:#666;}  #contacts   { float:left;width:230px; margin:10px 0px 10px 120px; } #notice     { width:230px; float:right; margin-top:10px; } #footer-bottom      {  clear:both; text-align:center; padding:10px 10px 20px 10px; border-top:2px #cccccc dotted; } 

i don't see advanced or complex css code, modern browsers should support it. anyway, here checklist:

checklist

• did checked different browser versions (you can switch inside internet explorer between older versions)? check: http://msdn.microsoft.com/en-us/library/gg699485(v=vs.85).aspx
• did try more simplified css?
• did clean browser cache?
• did try "browser sniffing"? check: http://en.wikipedia.org/wiki/browser_sniffing
• did try on computer?

if testing online might want check .htaccess.