Comment faire pour le pied de page ??

Bonjour,

Je n'arrive pas à trouver l'erreur dans le fichier .css
Voici l'adresse du site ou vous pourrez constater l'effet
http://www.matholp.net/spip.php?page=plan

Merci par avance pour votre aide

Pour info voila le fichier css en question

/* ----------------------------------------------------------- */
/* Feuilles de styles des squelettes par defaut pour SPIP 1.9 */
/* ----------------------------------------------------------- */

/* taille typo
* Base 100%
* -------------------------------------
* 20px 1.27em
* 19px 1.21em
* 18px 1.15em
* 17px 1.09em
* 16px 1.03em
* 15px 0.96em
* 14px 0.88em
* 13px 0.82em
* 12px 0.77em
* 11px 0.71em
* 10px 0.65em
* 9px 0.59em
* Attention : en dessous de 0.71em le texte devient illisible en text smallest sur MSIE
*/

/* ------------------------------------------
/* Correction des styles HTML par defaut
/* ------------------------------------------ */
body {
behavior: url(csshover.htc); /* WinIE behavior call */
background: #303031 url(images/fond.jpg) repeat-x top left;
margin: 0;
padding: 0;
text-align: center;
font-size: 1em;
color: #fbfbfb;
}

img, table { margin: 0; padding: 0; border: none; } h1, h2, h3, h4, h5, h6 { margin: 0; padding: 0; font-size: 1em; font-weight: normal; }

/* ------------------------------------------
/* Disposition a l'ecran des blocs principaux
/* ------------------------------------------ */

.page_photoalbum #page {
margin-bottom: 0;
}

#conteneur {
position: relative;
text-align: left;
border: none;
margin-top: 0;
margin-left: 11.8em;
padding-top: 0.5em;
padding-left: 2em;
margin-right: 0;
}

.page_sommaire #conteneur {padding-top: 0;}

#conteneur #contenu {
margin: 0;
padding: 0;
border: none;
float: left;
width: 95%;
}

#navigation {
margin: 0;
padding: 0;
border: none;
position: absolute;
top: 5,5em;
left: 0;
z-index: 300;
width: 11em;
text-align: center;
}

/* Blocs du contenu (c-a-d. la colonne principale) */
#contenu .contre-encart {
max-width: 1300px;
margin: 0;
padding: 0.5em 0 0 0;
border: none;
float: left;
width: 75%;
}
.page_article #contenu {
color: black;
max-width: 1300px;

min-height: 500px;
padding-top: 1.5em;
padding-bottom: 1em;
padding-right: 0.5em;
padding-top: 6.5em;
background-image: url(images/ArtWindTop.png);
background-position : top left;
background-color: #fbfbfb;
background-repeat: no-repeat;
text-align: justify;
}

#contenu .encart {
position: absolute;
top: 0;
right: 0;
width: 25%;
padding: 0;
border: none;
margin: 0 0 0 0;
}

/* Entete */
#entete {
margin: 0;
padding: 0;
background-color: none;
}
#entete #nom_site_spip, #entete a .spip_logos {
display: block;
margin: 0.5em auto 0 auto;
background-color: none;
border: none;
font-weight: bold;
font-size: 1.5em;
}
#entete a { text-decoration: none; color: white;}
#entete #nom_site_spip {text-align: center;}
#entete #nom_site_spip, #entete a:hover .spip_logos {
color: #white; }
#entete #barre .formulaire_recherche {
float: right;
margin-top: -25px;
}

#entete #barre {
width: 100%;
background: url(images/fondbarre.png) repeat-x;
height: 1.9em;
margin: 0;
padding: 0;
border: none;
}

#entete #barre ul {
margin: 0 0 0 13em;
border: none;
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 0.8em;
font-weight: bold;
color: black;
white-space: nowrap;
}

#entete #barre li {
margin: 0em;
padding: 0.4em 0.8em 0 0.8em;
border: none;
height: 1.9em;
list-style-type: none;
display: block;
float: left;
}

#entete #barre li a {
text-decoration: none;
color: black;
}

#entete #barre li:hover {
color: white;
background-color: black;
}

#entete #barre li:hover a {
color: white;
background-color: black;
}
/* Fil d'Ariane */
#hierarchie {
width: 90%;
margin: 0 0 2em 0;
font-size: 0.77em; }

.page_photoalbum #hierarchie {
width: 41em;
margin: 0 0 2em 0;
font-size: 0.77em; }

/* Pied de page */
#pied small { font-size: 0.77em; }
#pied img { vertical-align: middle; }
/*#pied {
width: 100%;
clear: both;
background: url(images/fondbarre.png) repeat-x;
height: 30px;
text-align: center;
margin-top: 4em;
border: none;

}*/
div#pied {
background: url(images/fondbarre.png) repeat-x;
position: absolute;
bottom: 0; left: 0;
width: 100%;
/* pour que le bloc prenne toute la largeur du bloc de référence
Note : le bloc de référence est le plus proche ancêtre positionné
en relatif ou en absolu */
height: 35px;
}
#pied ul {
border: none;
vertical-align: middle;
padding-top: 0.2em;
font-family: Verdana, Arial, Helvetica, sans-serif;
color: black;
white-space: nowrap;
}

#pied li {
margin: 0;
border: none;
padding-right: 2em;
height: 1.2em;
list-style-type: none;
display: inline;
}

#pied li a {
text-decoration: none;
color: black;
}

#pied a:hover {
font-weight: bold;
background-color: transparent;
height: 1.2em;
}
/* Espaceur de blocs */
.nettoyeur { clear: both; margin: 0; padding: 0; border: none; height: 0; line-height: 1px; font-size: 1px; }

/* Non visible a l'ecran */
.invisible { position: absolute; top: -3000em; height: 1%; }

/* ------------------------------------------
/* Typographie generale du site
/* ------------------------------------------ */

/* Typo pour les menus et la navigation */
body, #navigation, .encart, .formulaire_spip {
font-family: Verdana, Tahoma, Arial, sans-serif; }

/* Typo pour le contenu */
#contenu {
font-family: "Trebuchet MS", Helvetica, sans-serif; }

/* Typo pour les citations et extraits introductifs */
q, blockquote, .liste-articles li .texte, h3.spip, .voirskel {
font-family: Georgia, Times, serif; }

/* ------------------------------------------
/* Habillage des menus et de la navigation
/* ------------------------------------------ */

/* Habillage general des menus de navigation
---------------------------------------------- */
div#menu {
width: 14.5em;
padding-top: 1.7em;
padding-bottom: 1em;
margin: 1em;
font-size: 0.77em;
font-weight: bold;
background-image: url(images/ArtWindTop.png);
background-position : top left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}
div#menu ul {margin: 0; padding: 0; width: 14.5em;
border: none;}
div#menu li {position: relative; list-style: none; margin: 0;
border-bottom: solid 1px black; height: auto;}
div#menu ul.level1>li, div#menu ul.level1 li>a {color: black; border-bottom: none;}
div#menu ul.level1>li:hover, div#menu ul.level1 li:hover>a {background: #716b6f; color: white;}
div#menu ul.level2>li, div#menu ul.level3 li, div#menu ul.level2>li>a, div#menu ul.level3 li a{color: #716b6f; background: #white;}
div#menu ul.level2 li:hover, div#menu ul.level3 li:hover, div#menu ul.level2 li:hover>a, div#menu ul.level3 li:hover>a {background: #716b6f; color: #white;}

div#menu li a {display: block; padding: 0.25em 0 0.25em 0.5em;
text-decoration: none; width: auto; height: auto; }
div#menu ul.level3 li a {width: auto;}
div#menu>ul a {width: auto;}
div#menu ul.level2 {position: absolute; top: 0; left: 14.5em; width: 14.5em; display: none; background-color: #fbfbfb; border-top: solid 1px black; border-left: solid 1px black; border-right: solid 1px black;}
div#menu ul.level3 {position: absolute; top: 0; left: 14.6em; width: 14.5em; display: none; margin-left: -1px; background-color: #fbfbfb; border-top: solid 1px black; border-left: solid 1px black; border-right: solid 1px black;}
div#menu ul.level1 li.submenu:hover ul.level2 {display:block;}
div#menu ul.level2 li.submenu:hover ul.level3 {display:block;}

.rubriques, .breves, .syndic, .forums, .divers {
min-width: 10em;
margin: 1em;
padding-top: 1.5em;
padding-bottom: 1em;
font-size: 0.77em;
}

.une li{
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}

.menu-titre {
padding: 0.2em 0.4em;
text-align: center;
font-weight: bold;
}

.menu li {height: 1.5em;}

#navigation p, .encart p { margin: 0; padding: 0.2em 0.7em; text-align: left; }
#navigation ul, .encart ul { margin: 0; padding: 0.2em 0; text-align: left; list-style: none; }
#navigation li, .encart li { margin: 0; padding: 0 0.7em; }

#calendar h2 {display: none;}
#calendar a {font-weight: bold;}

/* Des couleurs specifiques selon les types de menus
---------------------------------------------- */
.menu {
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}

.menu li a {
text-decoration: none;
color: #000000;
}

.menu li:hover {
background-color: #000000;
}
.menu li:hover a{
color: #ad0073;
background-color: #000000;
}
.rubriques {
color: black;
margin-bottom: 1.5em;
padding-right: 0.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}
.rubriques .menu-titre { background: transparent; }

.breves {
padding-top: 1.5em;
padding-bottom: 1em;
padding-right: 0.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
color: black;
background-repeat: no-repeat;
}
.breves .menu-titre { background: transparent; }

.meme-rub {
width: 14em;
margin: 1em;
padding-top: 1.5em;
padding-bottom: 1em;
padding-right: 0.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
color: black;
font-size: 0.77em;
background-repeat: no-repeat;
}
.meme-rub .menu-titre { background: transparent; }

.liste-articles {
color: black;
padding-top: 1.5em;
padding-bottom: 1em;
padding-right: 0.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}

.liste-articles .texte { color: black;}

.liste-une ul li{
display: block;
padding-top: 1.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}

.syndic {
color: black;
padding-right: 0.5em;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}
.syndic .menu-titre { background: transparent; }

.forums { background: transparent;
color: black;
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}

.forums .menu-titre { background: transparent; }

.divers {
background-image: url(images/ArtWindTop.png);
background-position : top-left;
background-color: #fbfbfb;
background-repeat: no-repeat;
}
.divers .menu-titre { background: transparent; }

#hierarchie {color: #fbfbfb;}

/* ------------------------------------------
/* Habillage du contenu
/* ------------------------------------------ */

/* Cartouche et titraille
---------------------------------------------- */

.cartouche {
margin: 1.5em;
}

.cartouche .titre {
font-size: 1.27em;
font-weight: bold;
color: black;
text-align: center;
}

#contenu .surtitre, #contenu .soustitre { font-size: 0.82em; text-align: center;}

.cartouche .spip_logos {
float: right;
margin-left: 16px;
margin-bottom: 16px; }

.cartouche p { margin: 0; padding: 0; clear: left; }
.cartouche small { font-size: 0.71em; color: black;}

.cartouche .traductions { font-size: 0.71em; }
.cartouche .traductions * { display: inline; }
.cartouche .traductions li { padding-left: 1em; }

/* Mise en forme des textes du contenu
---------------------------------------------- */
.chapo {
margin: 1.5em;
font-weight: bold;
line-height: 1.4em; }

.lien {
background: #EEE;
margin: 1em;
margin-bottom: 1.5em;
padding: 0.82em;
border: 1px solid #CCC;
font-size: 0.82em;
font-weight: bold; }

.texte p { margin: 1em; color: black; font-size: 0.96em ; text-align: justify;}

.ps, .notes {
margin: 1.4em;
padding-top: 2px;
border-top: 2px solid #CCC; }
.ps { font-size: 0.82em; }
.notes { clear: both; font-size: 0.77em; }
.ps h2, .notes h2 { font-size: 1.19em; font-weight: bold; }

/* Portfolio
---------------------------------------------- */
#documents_portfolio {
clear: both;
margin: 1.4em;
padding-top: 2px;
border-top: 2px solid #CCC; }
#documents_portfolio h2 { margin-bottom: 0.4em; font-size: 0.88em; font-weight: bold; }

#document_actif { margin-top: 1em; }

/* Listes de documents joints (a un article ou une rubrique)
---------------------------------------------- */
#documents_joints {
margin: 1.4em;
padding-top: 2px;
border-top: 2px solid #CCC; }
#documents_joints h2 { margin-bottom: 0.4em; font-size: 0.88em; font-weight: bold; }
#documents_joints ul { margin: 0; padding: 0; list-style: none; }
#documents_joints li { margin-bottom: 0.4em; }
#documents_joints li .spip_doc_titre {}
#documents_joints li .spip_doc_titre small { font-weight: normal; }
#documents_joints li .spip_doc_descriptif {}

/* Listes d'articles et extraits introductifs
----------------------------------------------- */
.liste-articles ul { margin: 0; padding: 0; list-style: none; }
.liste-articles li { margin-bottom: 1em; padding-left: 1em; clear: both; }
.liste-articles h2 {text-align: center;}
.liste-articles li .titre {
font-size: 1.03em;
font-weight: bold; }

.liste-articles li .spip_logos {
float: right;
margin-left: 16px;
margin-bottom: 16px;
clear: right; }

.liste-articles li p { margin: 0; padding: 0; }

.liste-articles li .enclosures {
float: right;
text-align: right;
max-width: 60%;
margin: 0; }

.liste-articles li small {
display: block;
font-size: 0.71em; }

.liste-articles li .texte {
margin-top: 5px;
margin-bottom: 2em;
border: 1px solid #CCC;
padding: 0.9em;
font-size: 0.82em;
line-height: 1.4em; }

.liste-une ul { margin: 0; padding: 0; list-style: none; }
.liste-une li { margin-bottom: 1em; clear: both; }

.liste-une li .titre,.surtitre {
color: black;
font-size: 1.03em;
font-weight: bold; }

.une h3,p {
text-align: center; }

.liste-une li .spip_logos {
float: right;
margin-left: 16px;
margin-bottom: 16px;
clear: right; }

.liste-une li p { margin: 0; padding: 0; }

.liste-une li .enclosures {
float: right;
text-align: right;
max-width: 60%;
margin: 0; }

.liste-une li small {
color: black;
display: block;
font-size: 0.71em; }

.liste-une li .texte {
color: black;
margin-top: 5px;
margin-bottom: 2em;
padding: 0.9em;
font-size: 0.82em;
line-height: 1.4em; }

.pagination { font-size: 0.90em; }

/* ------------------------------------------
/* Habillage specifique du plan du site
/* ------------------------------------------ */

.page_plan .cartouche { display: none; }

.page_plan #contenu h2 {
clear: both;
background: #EEE;
border: 1px solid #CCC;
padding: 0.5em;
margin-bottom: 1em;
font-weight: bold;
text-align: center; }

.page_plan #contenu .contre-encart ul {
display: block;
clear: left;
margin-top: 0;
margin-bottom: 1em;
padding-top: 0; }

.page_plan #contenu .encart {
position: static;
float: right;
width: 25%;
padding: 0;
border: none;
margin: 0 1em 1em 1em;
}

.page_plan #contenu .contre-encart li {}

/* ------------------------------------------
/* Habillage des formulaires
/* ------------------------------------------ */

.formulaire_spip { text-align: left; font-size: 0.77em; }
.formulaire_spip p { margin: 0.5em 0; padding: 0; }

.formulaire_spip fieldset {}
.formulaire_spip legend {}

.formulaire_spip label {}
.formulaire_spip .forml { width: 99%; font-family: inherit; font-size: inherit; }

/* Boutons */
.spip_bouton { text-align: right; }
.spip_bouton input { float: right; }

/* Reponse du formulaire */
.reponse_formulaire { font-weight: bold; color: #e86519; }
fieldset.reponse_formulaire { border-color: #e86519; font-weight: normal; }

/* Previsualisation du message */
fieldset.previsu { padding: 1em; }

/* Formulaire de login au forum */
.formulaire_login_forum .forml { width: 12em; }
.formulaire_login_forum .spip_logos { float: right; padding-left: 10px; }

/* Choix des mots-clefs */
ul.choix_mots { float: left; width: 47%; margin: 0; padding: 0; list-style: none; }
ul.choix_mots label { display: inline; }

/* Formulaire de recherche */
.formulaire_recherche label { display: none; }

/* ------------------------------------------
/* Habillage des forums
/* ------------------------------------------ */

.forum-repondre, .forum-decompte {
clear: both;
margin-top: 2.5em;
padding-top: 2px;
border-top: 2px solid #CCC;
font-size: 0.88em;
font-weight: bold; }

/* * Habillage des forums */
ul.forum { display: block; clear: both; margin: 1em; padding: 0; }
ul.forum, ul.forum ul { list-style: none; }
.forum-fil { margin-top: 1.5em; }
.forum-fil ul { display: block; margin: 0; padding: 0; margin-left: 1em; }
.forum-chapo .forum-titre, .forum-chapo .forum-titre a { display: block; margin: 0; padding: 0; font-weight: bold; text-decoration: none;}
.forum-chapo small {color: #333;}
.forum-texte { margin: 0; padding: 0.5em 1em 0 1em; color: #black; font-size: 0.82em; }
.forum-texte .forum-lien {}
.forum-texte .forum-repondre-message { margin: 0; padding: 1px 0; text-align: right; }

/* Boite d'un forum : eclaircissement progressif des bords */
ul .forum-message { border: 1px solid #666; margin: 0; padding: 0; margin-bottom: 1em; }
ul ul .forum-message { border: 1px solid #A4A4A4; }
ul ul ul .forum-message { border: 1px solid #B8B8B8; }
ul ul ul ul .forum-message { border: 1px solid #CCC; }
ul ul ul ul ul .forum-message { border: 1px solid #E0E0E0; }
ul ul ul ul ul ul .forum-message { border: 1px dotted #E0E0E0; }

/* Boite de titre d'un forum : mise en couleur selon la profondeur du forum */
ul .forum-chapo { border: none; border-bottom: 1px dotted #B8B8B8; margin: 0; padding: 3px 6px 2px 6px; font-size: 0.88em; background: #C4E0E0; }
ul ul .forum-chapo { background: #D4E8E8; }
ul ul ul .forum-chapo { background: #E4F0F0; }
ul ul ul ul .forum-chapo { background: #F4F8F8; border-bottom: 1px dotted #E0E0E0; }
ul ul ul ul ul .forum-chapo { background: #FFF; }

/* ------------------------------------------
/* Habillage des petitions
/* ------------------------------------------ */

#signatures { clear: both; font-size: 0.77em; }

#signatures h2 {
padding: 0.5em;
text-align: center;
font-size: 1.2em;
font-weight: bold; }

#signatures table { width: 100%; margin: 1em 0; }
#signatures thead { display: none; } /* On n'affiche pas les titres du tableau */

#signatures td.signature-date {
background: #E4F0F0;
padding: 0.5em;
white-space: nowrap; }

#signatures td.signature-nom {
background: #ECF4F4;
padding: 0.2em;
text-align: center;
font-weight: bold; }

#signatures td.signature-message {
background: #F4F8F8;
padding: 0.4em;
font-size: 0.96em; }

/* ------------------------------------------
/* Couleurs des liens
/* ------------------------------------------ */
a { text-decoration: none; color: #666666; }
a:hover {
background-color: #666666;
color: white; }
td.today {border: 1px solid black;}

/* * Couleurs des liens de Spip */
a.spip_note {text-decoration: none; color: #666666;} /* liens vers notes de bas de page */
a.spip_in {text-decoration: none; color: #666666;} /* liens internes */
a.spip_out {text-decoration: none; color: #666666;} /* liens sortants */
a.spip_url {text-decoration: none; color: #666666;} /* liens url sortants */
a.spip_glossaire {text-decoration: none; color: #666666;} /* liens vers encyclopedie */
.on { font-weight: bold;} /* liens exposes */
a.spip_note:hover {color: white;
background-color: #666666;} /* liens vers notes de bas de page */
a.spip_in:hover {color: white;
background-color: #666666;} /* liens internes */
a.spip_out:hover {color: white;
background-color: #666666;} /* liens sortants */
a.spip_url:hover {color: white;
background-color: #666666;} /* liens url sortants */
a.spip_glossaire:hover {color: white;
background-color: #666666;} /* liens vers encyclopedie */
.on:hover { font-weight: bold;} /* liens exposes */