Qual é minha questão:
Olá o fórum acima é na versão PUNBB, mas eu quero mudar a versão para PHPBB3 porém não gostaria de perder o CSS dele então teria como transformar o CSS abaixo para versão PHPBB3?

Código:

/* BODY------------------------------------------------------*/

#container{
z-index: -1;
padding: 0px 10px;
width: 920;
background: url(http://i42.servimg.com/u/f42/16/22/45/05/body1010.png) repeat-y center;
margin-top: 0px !important;}

.pun{
padding-top: 0px;
padding-right: 20px;
padding-left: 20px;}

#container {
width: 900px;
margin: 0 auto;
padding-bottom: 30px;}

/* BODY-END------------------------------------------------------*/




/* HEADER------------------------------------------------------*/

#pun-intro{background: transparent url(http://i42.servimg.com/u/f42/16/22/45/05/header12.png) no-repeat center;
height: 343px;}

#pun-title{
display: inline !important;
color: white;
position: absolute;
top: 30px;
float: left !important;
text-align: left !important;
font-size: 30px;
font-weight: bold;
text-shadow: black 1px 1px 5px;
margin-left: 30px;}

#pun-desc{
display: inline !important;
color: white !important;
position: absolute;
top: 50px;
float: left !important;
text-align: left !important;
text-shadow: black 1px 1px 5px;
margin-left: 35px;}

#pun-logo {margin-top: 113px;
margin-left: -4px;}

#pun-head #pun-navlinks{
border-top: 2px solid #6d6969;
border-bottom: 2px solid #6d6969;
background: #6d6969;
height: 25px;
margin-top: -16px;
margin-bottom: -4px;
width: 920px;
padding: 0px;}

#pun-head #pun-navlinks li a{
margin: 0 0px 0 0;
color: white;
font-weight: bold;
position: relative;
top: 3px;
text-shadow: black 1px 1px 5px;
padding-right: 5px;
padding-left: 5px;
font-size: 12px;}

#pun-navlinks ul {text-align: center;}

#pun-head #pun-navlinks li a:hover{
text-shadow: black -1px -1px 3px;
text-decoration: none;
height: 29px;
background: #000000;
padding: 5px;
padding-top: 10px;
padding-bottom: 12px;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;}

#pun-head #pun-navlinks a[href="/profile.forum?mode=register"]{background: #000000;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
padding: 5px;
padding-top: 10px;
padding-bottom: 12px;
border: 2px solid white;
-moz-box-shadow: 0px 0px 5px #0c0c0c;
-webkit-box-shadow: 0px 0px 5px #0c0c0c;
box-shadow: 0px 0px 5px #0c0c0c;}

#i_icon_mini_new_message{margin-bottom: -5px;}

#hitskin_preview {display: none!important; height:0px!important; } * html #hitskin_preview { display:none!important; height:0px!important;}

/* HEADER-END------------------------------------------------------*/




/* TABLES------------------------------------------------------*/

.pun table a:hover{text-shadow: #c2c2c2 -1px -1px 0px;}

.frm-form, fieldset.frm-set{
margin: 0px !important;
margin-top: 5px !important;}

.pun table td.tcl .status img{margin-left: -10px;}

.pun .main-foot .h2,.options,.main-head,.main .main-head .page-title,.main .main-head .page-title a,#ucp .main-head,.main-head a {color: white !important;}

.main .main-head {
background: url(http://i42.servimg.com/u/f42/16/22/45/05/fundo_10.png) no-repeat center;
text-align: center;
height: 30px;
color: white;
font-family: arial !important;
font-size: 15px !important;
font-weight: bold !important;
padding-top: 10px;
padding-bottom: 0px;
margin-bottom: -5px;
margin-top: 5px;}

.main .main-head .page-title, .main .main-head{
color: white;
font-family: arial !important;
font-size: 15px !important;
font-weight: bold !important;
text-shadow: #000000 1px 1px 5px;}

.pun .main-head h2, .pun .main-head h3, .pun .main-head th{color: white;
font-family: arial !important;
font-size: 15px !important;
font-weight: bold !important;
text-shadow: #000000 1px 1px 5px;}

.pun table.table {
width: 880px;
margin-left: 10px;
padding: 0px;
border: 2px solid #000000;
border-top: none;
background: #e9e9e9;
-moz-border-radius: 0px 0px 10px 10px;
-webkit-border-radius: 0px 0px 10px 10px;
border-radius: 0px 0px 10px 10px;
border-collapse: separate;
margin-bottom: 10px;}

.pun table.table th{border-bottom: 1px dashed #000000;
background: #e9e9e9;}

.pun table.table td {
border: none !important;
background: none !important;}

.tc2, .tc3{font-size: 20px;
font-family: georgia;
color: #000000;
text-shadow: white 1px 1px 1px;}

fieldset.frm-set .tc2, fieldset.frm-set tc3, .frm-form .tc2, .tc2 a, .tc3 a{font-size: 12px;
font-family: Verdana,Arial,Helvetica,sans-serif;
color: #e9e9e9;}

.table{margin-bottom: 0px !important;}

.frm-form{background: none !important;}

/* TABLES-END------------------------------------------------------*/




/*OTHER-BOXES------------------------------------------------------*/
#pun-visit{border: none;
background: none;}

.main-content {
border: none !important;
background: none !important;}

#pun-announcement{border: 2px solid #5f2626;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;}

#pun-announcement{margin-top: 3px;}

.main-box .right{display: none;}

.main-box{
display: inline-block !important;
border: none;
background: none;}

#login_popup{border: 2px solid #5f2626;}

#fa_ticker_block{background: url(http://i42.servimg.com/u/f42/16/22/45/05/body1010.png) repeat-y center;
margin-bottom: -4px;
margin-top: 4px; }


#fa_ticker_block .module{background: #fbfbfb !important;
width: 890px !important;
margin-left: 11px !important;}

/*OTHER-BOXES------------------------------------------------------*/




/*WHO IS ONLINE BOX------------------------------------------------------*/

#pun-info {border: 2px solid #5e5b5b;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
background: #e9e9e9;
margin: 0px !important;}

#stats, #onlinelist{background: none !important;}

#onlinelist .right{
padding: 5px;
padding-right: 3px;
font-family: arial !important;
font-size: 16px !important;
font-weight: bold !important;
border: 2px solid #cccccc;
border-right: none;
margin-right: -12px;
-moz-border-radius: 6px 0px 0px 6px;
-webkit-border-radius: 6px 0px 0px 6px;
border-radius: 6px 0px 0px 6px;
background: #F4F4F4 url(http://i66.servimg.com/u/f66/11/96/49/61/globe10.png) no-repeat left;
padding-left: 37px;}

#onlinechat{background: none;}

/*WHO IS ONLINE BOX-END------------------------------------------------------*/




/*LEGEND------------------------------------------------------*/

ul#pun-legend li img{
background: url() no-repeat left;
padding-left: 19px;
margin-bottom: -25px;}

ul#pun-legend{
padding-top: 5px;
height: 62px;
margin-top: -2px;
background: url(http://i42.servimg.com/u/f42/16/22/45/05/legend14.png) no-repeat top center;}


/*LEGEND FROM TOPICS LIST------------------------------------------------------*/

ul.pun-legend {
background: none;
padding: 15px;
margin-top: -32px;
border: 2px solid #6d6969;
border-top: 0px;
background: #e9e9e9;
-moz-border-radius: 0px 0px 10px 10px;
-webkit-border-radius: 0px 0px 10px 10px;
border-radius: 0px 0px 10px 10px;}

ul.pun-legend img{background: url(http://i66.servimg.com/u/f66/11/96/49/61/iconbg10.png) no-repeat left;
padding-left: 10px;}

.pun .main-head a.exthelp,.pun .main-head a.exthelp:link,.pun .main-head a.exthelp:visited {
padding-left: 20px;
background-repeat: no-repeat;
background-position: left;
background-image: url(http://i66.servimg.com/u/f66/11/96/49/61/questi10.png);}


/*PRIVATE MSG. LEGEND------------------------------------------------------*/

.pun-privmsg{background: url() no-repeat center;
height: 48px;
padding-top: 17px;}

/*LEGEND-END------------------------------------------------------*/




/* OTHER STAFF------------------------------------------------------*/

a, a:hover{text-decoration: none;}

#main-content #add-google{
display: none !important;
height: 0px !important;
width: 0px !important;
padding: 0px !important;
margin: 0px !important;}

#main .user_login_form {display: none !important;}

.main-box ul{
display: inline !important;
margin-left: 20px;
margin-top: -19px;
background: #F4F4F4;
padding: 5px;
width: auto !important;
border: 2px solid #cccccc;
border-top: none;
-moz-border-radius: 0px 0px 10px 10px;
-webkit-border-radius: 0px 0px 10px 10px;
border-radius: 0px 0px 10px 10px;}

.pun .paged-head, .pun .paged-foot{border: none;
background: none;
margin-top: -12px;}

.button2{padding: 3px !important;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;}

.blog_cal-border{background: url(http://i42.servimg.com/u/f42/16/22/45/05/date1110.png) no-repeat center;
width: 61px;
height: 82px;
padding-top: 23px;
padding-left: 19px;
margin-right: 27px;
margin-top: -10px;}

/* OTHER STAFF-END------------------------------------------------------*/




/* FOOTER------------------------------------------------------*/


#pun-about a[href="http://www.blogratuit.ro/ro/"]{display: none;}

#pun-about{color: white;}

#pun-about a{text-decoration: none;
padding: 0px;}

#pun-about{
padding-top: 5px;
background: transparent ;
border: none;
background: url() no-repeat 90% 39px;}

#pun-about #qjump {
display: none;}

#pun-about ul{border-top: 2px solid #d7d7d7;
border-bottom: 2px solid #d7d7d7;
background: #d7d7d7;
height: 25px;
margin-bottom: 30px;
width: 916px;
margin-left: -10px;
text-align: center;}

#pun-about ul li{position: relative;
top: 2px;}

#pun-about ul li a{color: white;
text-shadow: black 1px 1px 5px;}

#pun-about ul li a:hover{
text-shadow: black -1px -1px 3px;}

#pun-foot{
background: transparent url(http://i42.servimg.com/u/f42/16/22/45/05/footer11.png) no-repeat 0px 24px;
height: 90px;
border: none;
margin-top: -40px;}

#pun-foot .center a{color: white !important;
font-size: 15px;
font-family: arial;
text-shadow: black 1px 1px 5px;}

/* FOOTER-END------------------------------------------------------*/



/* POST------------------------------------------------------*/

.post{margin-top: 5px;
background: #ffffff !important;
border: 2px solid #000000 !important;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;}

.postmain, .posthead {background: transparent !important;}

.postmain, .posthead, .postmain, .postfoot{
border-color: #000000 !important;}

.posthead strong{
margin-top: -7px;
font-size: 20px;
font-family: georgia;
color: #9e9595;
text-shadow: black 1px 1px 1px;}

.options{
padding: 5px;
background: #d7d7d7;
border: 2px solid #000000;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
margin-bottom: 5px;}

.main-head .options{
padding: 0px;
background: none;
border: none;
margin-bottom: 0px;}

.post-options img{margin: 4px;}

.post-options img:hover {border-bottom: 1px dashed #704A4A;
margin-bottom: 3px;}

.post-options img[src="http://i65.servimg.com/u/f65/11/95/16/90/edit10.png"] {
position: relative;
top: -2px;}

.post-options img[src="http://i65.servimg.com/u/f65/11/95/16/90/delete10.png"]{
position: relative;
top: -2px;}

.post-options img[src="http://i65.servimg.com/u/f65/11/95/16/90/locked13.png"]{
position: relative;
top: -2px;}

.post-options img["http://i65.servimg.com/u/f65/11/95/16/90/unlock10.png"]{
position: relative;
top: -2px;}

.post-options img[src="http://i65.servimg.com/u/f65/11/95/16/90/lock10.png"]{
position: relative;
top: -2px;}

#i_icon_online{margin-left: -15px !important;}

.user-contact img{filter:alpha(opacity=80);
-moz-opacity: 0.8;
opacity: 0.8;
background: transparent !important;}

.user-contact img:hover{
filter:alpha(opacity=100);
-moz-opacity: 1;
opacity: 1;}

/* POST-END------------------------------------------------------*/




/* POSTING BUTTONS------------------------------------------------------*/

.posting img, #new-message-link img{padding-top: 12px;
padding-bottom: 12px;
margin-top: -12px;
margin-bottom: -12px;}

.posting img:hover, #new-message-link img:hover{background: url(http://i42.servimg.com/u/f42/16/22/45/05/button10.png) no-repeat center;}

/* POSTING BUTTONS-END------------------------------------------------------*/




/* WIDGETS------------------------------------------------------*/
.module.main{
border: 2px solid #5f2626;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
padding: 2px;
margin: 2px !important;}

.module .main-head{-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
background: #a71d02 !important;
margin-top: 0px;
height: 25px;
padding-top: 5px;}

.module p.author {
color: white;
-moz-border-radius: 0px 0px 7px 7px;
-webkit-border-radius: 0px 0px 7px 7px;
border-radius: 0px 0px 7px 7px;
padding: 0.25em;
padding-left: 20px;
background-color: #a71d02;
border-bottom: none;
font-size: 0.9em;}

/* WIDGETS-END------------------------------------------------------*/


/* SEMIFIX A ADVANCED PROFILE BUG------------------------------------------------------*/

#profile-advanced-left {margin-right: 250px;}

#profile-advanced-right {
float: right;
width: 250px;}

#profile-advanced-layout {
margin-left: -10px;
padding: 10px;
padding-bottom: 5px;
margin-bottom: -5px;
background: url(http://i42.servimg.com/u/f42/16/22/45/05/body1010.png) repeat-y center;}

#profile-advanced-layout{padding-bottom: 50%;}

/* SEMIFIX A ADVANCED PROFILE BUG-END------------------------------------------------------*/

/* CHATBOX------------------------------------------------------*/
 
.chatbox {
background-color: #F1EFF1 !important;
border: 2px solid #000000 !important;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
padding: 2px;
margin: 0px !important;}

#chatbox{background-color: #F1EFF1;}

#chatbox_header {
background: #F1EFF1;
margin-top: 0px;
height: 30px;chatbox_messenger_form
padding-top: 5px;
text-shadow: white 1px 1px 1px;}

#chatbox_option_co,#chatbox_option_disco{
font-size: 16px;
font-weight: bold;
font-family: arial;}

#chatbox_header.main-head {
padding: 0 1.3em;
color: darkgrey;
background-color: #cacaca;
text-shadow: white 1px 1px 1px;}

.chatbox-title,.chatbox-title a.chat-title,.chatbox-options li,.chatbox-options li a,.chatbox-options li label {
color: darkgrey;
text-decoration: none;
text-shadow: white 1px 1px 1px;}

#chatbox_members {
position: absolute;
top: 30px;
bottom: 30px;
width: 180px;
overflow: auto;
border-right: 1px dashed black;
background-color: #F1EFF1;}

#chatbox_messenger_form {
margin: 10px 0 0 0;
background-color: #F1EFF1 !important;}

#chatbox_members .member-title {
text-align: center;
padding: 0.5em 0.25em;
background-image: none;
font-size: 12px;
background-color: #F1EFF1;
color : black;
font-family: Verdana,Arial,Helvetica,sans-serif;}

.chatbox_row_1, .chatbox_row_2, .chatbox_row_3 {
padding: 4px;
background-color:#F1EFF1 !important;}

#chatbox .user {
font-weight: bold;}

.memberlist_row_1 {background-color: #F1EFF1;}

#chatbox_footer {
position: absolute;
bottom: 0;
left: 0;
right: 0;
border-top: 1px dashed black;
background-color: #d7d7d7;}

#message{
background-color: white;}

.fontbutton_normal {
background: #F1EFF1;}

.fontbutton_selected {
border: 1px solid black;
background-color: #F1EFF1;}

.fontbutton_clicked {
background: #F1EFF1;
border: 1px solid black;}

#chatbox_contextmenu {
border: 2px solid black;
background-color: #F1EFF1;}

#chatbox_contextmenu p {
margin:0;
padding: 1px 4px;
font-family: verdana, arial, sans-serif;
background: #;
border-bottom:1px solid black;
background-color: #F1EFF1;}

#chatbox_contextmenu p.close {
padding: 1px;
font-size: 95%;
color:black;
background: url('');
background-color: #F1EFF1;}

#chatbox_contextmenu p.close img {
vertical-align: middle;
padding-left: 20px;
background-color: #F1EFF1;}

#chatbox_contextmenu a {
color: black;
text-decoration: none;
font-size: 95%;
background-color: #F1EFF1;}

#chatbox_contextmenu p.close img {
vertical-align: middle;
padding-left: 20px;
background-color: #F1EFF1;}

/* CHATBOX-END------------------------------------------------------*/




/* TEXT AREA-VISTA EFECT------------------------------------------------------*/

#text_editor_textarea{background: #f0f0f0;
border: 5px solid white;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
-moz-box-shadow: 0px 0px 10px #0c0c0c;
-webkit-box-shadow: 0px 0px 10px #0c0c0c;
box-shadow: 0px 0px 10px #0c0c0c;
margin: 5px;
padding: 5px;}

/* TEXT AREA-VISTA EFECT-END------------------------------------------------------*/




/* ATTACHMENT-----------------------------------------------------*/

.attachbox{border: 1px solid #5f2626;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
margin: 10px;
background: #F4F4F4;
text-shadow: white 1px 1px 1px;}

.attachbox dd{border-top: 1px dashed #5f2626;}

.attachbox .i_icon_delete{float: right;}

/* ATTACHMENT-END-----------------------------------------------------*/




/* SEARCH QUERY-----------------------------------------------------*/

#search_menu{border: 2px solid #5f2626;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
margin: 10px;
background: #F4F4F4;}

.title-overview{background: none;}

#search_menu a{text-shadow: none !important;}

#search_menu a:hover{background: none !important;
text-shadow: none !important;}

/* SEARCH QUERY-END-----------------------------------------------------*/




/* SHARE ICONS FROM A BLOG MSG.-----------------------------------------------------*/

#bookmarks a img.twitter {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/twitte10.png) no-repeat scroll;}

#bookmarks img.excite{display: none;}

#bookmarks a img.digg {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/digg10.png) no-repeat scroll;}

#bookmarks a img.reddit {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/reddit10.png) no-repeat scroll;}

#bookmarks a img.delicious {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/delici10.png) no-repeat scroll;}

#bookmarks a img.google {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/google10.png) no-repeat scroll;}

#bookmarks img.live {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/window10.png) no-repeat scroll;}

#bookmarks img.facebook {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/facebo10.png) no-repeat scroll;}

#bookmarks img.slashdot {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/slashd10.png) no-repeat scroll;}

#bookmarks img.netscape {display: none;}

#bookmarks img.technorati {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/techno10.png) no-repeat scroll;}

#bookmarks img.stumbleupon {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/stumbl10.png) no-repeat scroll;}

#bookmarks img.furl {display: none;}

#bookmarks img.smarking {display: none;}

#bookmarks img.newsvine {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/newsvi11.png) no-repeat scroll;}

#bookmarks img.yahoo {width: 32px;height: 32px;margin: 2px;background: url(http://i66.servimg.com/u/f66/11/96/49/61/yahoo10.png) no-repeat scroll;}

#bookmarks {
font-size: 15px;
font-weight: bold;}

/* SHARE ICONS FROM A BLOG MSG.-END-----------------------------------------------------*/




/* POINTS SYSTEM-----------------------------------------------------*/

.vote{margin: 3px;}

.vote .vote-button a {
font-size: 20px;
font-weight: bold;
font-family: arial;}

.vote-bar{
border: 2px solid white !important;
height: 50px !important;
width: 6px !important;
margin-right: 4px;
-moz-box-shadow: 0px 0px 5px #0c0c0c;
-webkit-box-shadow: 0px 0px 5px #0c0c0c;
box-shadow: 0px 0px 5px #0c0c0c;}

.vote-bar-plus{
background: #8ecb18 !important;}

.vote-bar-minus{
background: #bf4d07 !important;}

/* POINTS SYSTEM-END-----------------------------------------------------*/

#profile-advanced-right .module .main-head .h3{font-weight: normal !important;}

#tabs ul li a{background: #f4f5f4 url(http://i66.servimg.com/u/f66/11/96/49/61/tabbg10.png);
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;}

#tabs ul li a:hover{background: #f4f5f4 url(http://i66.servimg.com/u/f66/11/96/49/61/tabhov11.png);
color: #704a4a;}

#tabs ul .activetab a{background: #a71d02 url(http://i66.servimg.com/u/f66/11/96/49/61/tabact10.png);}

.main{margin: 1em 0px;
border: 0px;}

.pun .main table .main-head{width: 900px;}

Medidas que eu tomei para corrigir o problema:
Nenhuma

Links e imagens do meu problema:
Não tenho

Endereço do meu fórum:
http://temacombatarms.forumeiros.com/

Versão do meu fórum:
PUNBB

Olá, eu fiz o desinger de um forum que é bem parecido com este, só que o mesmo é PHPBB3, faça um forum de teste para ver se funciona, até mais

O código que citei não funciona em PHPBB3, por isso criei este tópico, poderia me passar o tema em que usou do fórum que você fez?

Olá,

Perdão mas você pode fazer isso! Acesse o CCS padrão da versão Phpbb3, somente mude as classes adicionando as mesmas propriedades e terá o resultado esperado.
CSS padrão Phpbb3: http://forumactif.forumeiros.com/40-ltr.css?pop=1
Para mais informações, leia a seguinte FAQ: https://ajuda.forumeiros.com/t16183-

Até mais!

Podem bloquear o tópico.