diff --git a/materiels.tar.gz b/materiels.tar.gz
index a675845..f83df73 100644
Binary files a/materiels.tar.gz and b/materiels.tar.gz differ
diff --git a/src/templates/categories/index.tpl b/src/templates/categories/index.tpl
index 1736847..2e21a88 100644
--- a/src/templates/categories/index.tpl
+++ b/src/templates/categories/index.tpl
@@ -27,9 +27,9 @@
 			<tr>
 				<td>{$cat.name}</td>
 				<td class="actions">
-          {linkbutton shape="upload" label="Liste des matériels" href="materiels_par_categorie.php?id=%d"|args:$cat.id}
-          {linkbutton shape="edit" label="Modifier" href="modifier_categorie.php?id=%d"|args:$cat.id}
-          {linkbutton shape="delete" label="Supprimer" href="supprimer_categorie.php?id=%d"|args:$cat.id}
+          			{linkbutton shape="upload" label="Liste des matériels" href="materiels_par_categorie.php?id=%d"|args:$cat.id}
+          			{linkbutton shape="edit" label="Modifier" href="modifier_categorie.php?id=%d"|args:$cat.id}
+         			{linkbutton shape="delete" label="Supprimer" href="supprimer_categorie.php?id=%d"|args:$cat.id}
 				</td>
 			</tr>
 		{/foreach}
diff --git a/src/templates/categories/materiels_par_categorie.tpl b/src/templates/categories/materiels_par_categorie.tpl
index e2eae6c..d8fe5cf 100644
--- a/src/templates/categories/materiels_par_categorie.tpl
+++ b/src/templates/categories/materiels_par_categorie.tpl
@@ -2,7 +2,7 @@
 {include file="%s_nav.tpl"|args:$plugin_tpl current_nav="categories"}
 <!-- -->
 <!-- title -->
-<h2 style="text-align: center;">{$cat_name}</h2>
+<h2 class="ruler">{$cat_name}</h2>
 <!-- -->
 <br>
 <!-- table with list of equipments owned -->
@@ -10,22 +10,22 @@
   <table class="list">
     <thead>
       <tr>
-        <th colspan="4" style="text-align: center;"><h3>Matériel dont l'association est propriétaire</h3></th>
+        <th colspan="4"><h3 class="ruler">Matériel dont l'association est propriétaire</h3></th>
       </tr>
       <tr>
         <th><b>Désignation</b></th>
-        <th style="text-align: center;"><b>Stock</b></th>
-        <th style="text-align: center;"><b>Sortie</b></th>
-        <th style="text-align: center;"><b>Disponible</b></th>
+        <th class="num"><b>Stock</b></th>
+        <th class="num"><b>Sortie</b></th>
+        <th class="num"><b>Disponible</b></th>
       </tr>
     </thead>
     <tbody>
       {foreach from=$eqmts_owned item="eqmt"}
         <tr>
           <td>{$eqmt.designation}</td>
-          <td style="text-align: center;">{$eqmt.owned}</td>
-          <td style="text-align: center;">{$eqmt.owned_out}</td>
-          <td style="text-align: center;">{$eqmt.owned - $eqmt.owned_out}</td>
+          <td class="num">{$eqmt.owned}</td>
+          <td class="num">{$eqmt.owned_out}</td>
+          <td class="num">{$eqmt.owned - $eqmt.owned_out}</td>
         </tr>
       {/foreach}
     </tbody>
@@ -37,18 +37,18 @@
   <table class="list">
     <thead>
       <tr>
-        <th colspan="2" style="text-align: center;"><h3>Matériel dont l'association n'est pas propriétaire (emprunté)</h3></th>
+        <th colspan="2"><h3 class="ruler">Matériel dont l'association n'est pas propriétaire (emprunté)</h3></th>
       </tr>
       <tr>
         <th><b>Désignation</b></th>
-        <th style="text-align: center;"><b>Nombre</b></th>
+        <th class="num"><b>Nombre</b></th>
 			</tr>
 			</thead>
 			<tbody>
 				{foreach from=$eqmts_no_owned item="eqmt"}
 					<tr>
             <td>{$eqmt.designation}</td>
-            <td style="text-align: center;">{$eqmt.no_owned}</td>
+            <td class="num">{$eqmt.no_owned}</td>
           </tr>
         {/foreach}
       </tbody>
@@ -60,7 +60,7 @@
   <table class="list">
     <thead>
       <tr>
-        <th style="text-align: center;"><h3>Matériel dont l'association n'est plus en possession</h3></th>
+        <th><h3  class="ruler">Matériel dont l'association n'est plus en possession</h3></th>
       </tr>
       <tr>
         <th><b>Désignation</b></th>
diff --git a/src/templates/historique.tpl b/src/templates/historique.tpl
index d9fa150..ceb21b3 100644
--- a/src/templates/historique.tpl
+++ b/src/templates/historique.tpl
@@ -2,7 +2,7 @@
 {include file="%s_nav.tpl"|args:$plugin_tpl current_nav="index"}
 <!-- -->
 <!-- -->
-<h2 style="text-align: center;">Historique des entrées / sorties</h2>
+<h2  class="ruler">Historique des entrées / sorties</h2>
 
 <br>
 
@@ -11,15 +11,15 @@
   <table class="list">
     <thead>
       <tr>
-        <th colspan="5" style="text-align: center;">
-          <h3>{$eqmt_requested.designation} - {$eqmt_requested.category} -</h3>
+        <th colspan="5">
+          <h3  class="ruler">{$eqmt_requested.designation} | {$eqmt_requested.category}</h3>
         </th>
       </tr>
       <tr>
         <th><b>Date</b></th>
         <th><b>Sens</b></th>
         <th><b>Type</b></th>
-        <th><b>Nombre</b></th>
+        <th class="num"><b>Nombre</b></th>
         <th><b>Remarques</b></th>
       </tr>
     </thead>
@@ -33,7 +33,7 @@
             <td>Entrée</td>
           {/if}
           <td>{$mvt.kind}</td>
-          <td>{$mvt.equipment_number}</td>
+          <td class="num">{$mvt.equipment_number}</td>
           <td>{$mvt.additional_comment}</td>
         </tr>
       {/foreach}
diff --git a/src/templates/index.tpl b/src/templates/index.tpl
index 5f8fe5f..73d27d4 100644
--- a/src/templates/index.tpl
+++ b/src/templates/index.tpl
@@ -1,7 +1,7 @@
 <!-- nav bar -->
 {include file="%s_nav.tpl"|args:$plugin_tpl current_nav="index"}
 <!-- -->
-<h2 style="text-align: center;">Matériel dont l'association est propriétaire</h2>
+<h2 class="ruler">Matériel dont l'association est propriétaire</h2>
 
 <br>
 <!-- tables for equipments owned -->
@@ -10,13 +10,13 @@
 		<table class="list">
 			<thead>
 				<tr>
-					<th colspan="5" style="text-align: center;"><h3>{$cat}</h3></th>
+					<th colspan="5"><h3 class="ruler">{$cat}</h3></th>
 				</tr>
 				<tr>
 					<th><b>Désignation</b></th>
-					<th style="text-align: center;"><b>Stock</b></th>
-					<th style="text-align: center;"><b>Sortie</b></th>
-					<th style="text-align: center;"><b>Disponible</b></th>
+					<th class="num"><b>Stock</b></th>
+					<th class="num"><b>Sortie</b></th>
+					<th class="num"><b>Disponible</b></th>
 					<th></th>
 				</tr>
 			</thead>
@@ -24,12 +24,12 @@
 				{foreach from=$eqmts item="eqmt"}
 					<tr>
 						<td>{$eqmt.designation}</td>
-						<td style="text-align: center;">{$eqmt.owned}</td>
-						<td style="text-align: center;">{$eqmt.owned_out}</td>
-						<td style="text-align: center;">{$eqmt.owned - $eqmt.owned_out}</td>
-						<td class="actions" style="text-align: center;">
+						<td class="num">{$eqmt.owned}</td>
+						<td class="num">{$eqmt.owned_out}</td>
+						<td class="num">{$eqmt.owned - $eqmt.owned_out}</td>
+						<td class="actions">
 							{linkbutton shape="edit" label="Historique des entrées / sorties" href="historique.php?id=%d"|args:$eqmt.id}
-          		{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
+          					{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
 						</td>
 					</tr>
 				{/foreach}
@@ -44,7 +44,7 @@
 
 <br>
 
-<h2 style="text-align: center;">Matériel dont l'association n'est pas propriétaire (emprunté)</h2>
+<h2 class="ruler">Matériel dont l'association n'est pas propriétaire (emprunté)</h2>
 
 <br>
 <!-- tables for equipments no owned -->
@@ -53,11 +53,11 @@
 		<table class="list">
 			<thead>
 				<tr>
-					<th colspan="5" style="text-align: center;"><h3>{$cat}</h3></th>
+					<th colspan="3"><h3 class="ruler">{$cat}</h3></th>
 				</tr>
 				<tr>
 					<th><b>Désignation</b></th>
-					<th style="text-align: center;"><b>Nombre</b></th>
+					<th class="num"><b>Nombre</b></th>
 					<th></th>
 				</tr>
 			</thead>
@@ -65,10 +65,10 @@
 				{foreach from=$eqmts item="eqmt"}
 					<tr>
 						<td>{$eqmt.designation}</td>
-						<td style="text-align: center;">{$eqmt.no_owned}</td>
-						<td class="actions" style="text-align: center;">
+						<td class="num">{$eqmt.no_owned}</td>
+						<td class="actions">
 							{linkbutton shape="edit" label="Historique des entrées / sorties" href="historique.php?id=%d"|args:$eqmt.id}
-          		{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
+          					{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
 						</td>
 					</tr>
 				{/foreach}
@@ -83,7 +83,7 @@
 
 <br>
 
-<h2 style="text-align: center;">Matériel dont l'association n'est plus en possession</h2>
+<h2 class="ruler">Matériel dont l'association n'est plus en possession</h2>
 
 <br>
 <!-- tables for equipments just listed -->
@@ -92,7 +92,7 @@
 		<table class="list">
 			<thead>
 				<tr>
-					<th colspan="5" style="text-align: center;"><h3>{$cat}</h3></th>
+					<th colspan="2"><h3 class="ruler">{$cat}</h3></th>
 				</tr>
 				<tr>
 					<th><b>Désignation</b></th>
@@ -103,9 +103,9 @@
 				{foreach from=$eqmts item="eqmt"}
 					<tr>
 						<td>{$eqmt.designation}</td>
-						<td class="actions" style="text-align: center;">
+						<td class="actions">
 							{linkbutton shape="edit" label="Historique des entrées / sorties" href="historique.php?id=%d"|args:$eqmt.id}
-          		{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
+          					{linkbutton shape="edit" label="Modifier" href="modifier_materiel.php?id=%d"|args:$eqmt.id}
 						</td>
 					</tr>
 				{/foreach}
diff --git a/src/templates/mouvements/tableau_mouvements.tpl b/src/templates/mouvements/tableau_mouvements.tpl
index 3e71ffa..6f2d10d 100644
--- a/src/templates/mouvements/tableau_mouvements.tpl
+++ b/src/templates/mouvements/tableau_mouvements.tpl
@@ -4,7 +4,7 @@
     <thead>
       <th><b>Date</b></th>
       <th><b>Type</b></th>
-      <th><b>Nombre</b></th>
+      <th class="num"><b>Nombre</b></th>
       <th><b>Matériel</b></th>
       <th><b>Remarques</b></th>
       <th></th>
@@ -14,7 +14,7 @@
         <tr>
           <td>{$mvt.mvt_date|date_format:'%d/%m/%y'}</td>
           <td>{$mvt.kind}</td>
-          <td>{$mvt.equipment_number}</td>
+          <td class="num">{$mvt.equipment_number}</td>
           <td>{$mvt.equipment}</td>
           <td>{$mvt.additional_comment}</td>
           <td class="actions">