diff --git a/modoboa/extensions/amavis/static/amavis/css/quarantine.css b/modoboa/extensions/amavis/static/amavis/css/quarantine.css
index e60ea73ec..07133c6bc 100644
--- a/modoboa/extensions/amavis/static/amavis/css/quarantine.css
+++ b/modoboa/extensions/amavis/static/amavis/css/quarantine.css
@@ -76,10 +76,6 @@ thead tr {
     z-index: 1;
 }
 
-td > input[type=checkbox] {
-    margin: 0;
-}
-
 td[name=type] span {
     cursor: pointer;
 }
diff --git a/modoboa/extensions/webmail/static/webmail/css/folders.css b/modoboa/extensions/webmail/static/webmail/css/folders.css
deleted file mode 100644
index ce1b25885..000000000
--- a/modoboa/extensions/webmail/static/webmail/css/folders.css
+++ /dev/null
@@ -1,146 +0,0 @@
-#folders {
-    float: left;
-    width: 160px;
-}
-
-#folders2 {
-    border: 1px solid #ccc;
-    background-color: #eee;
-    position: absolute;
-    top: 100px;
-    left: 20px;
-    right: 20px;
-    bottom: 40px;
-    overflow-x: hidden;
-    overflow-y: auto;
-}
-
-#fdcreate {
-    position: absolute;
-    top: 370px;
-    left: 20px;
-    right: 20px;
-    text-align: center;
-}
-
-div.boxtitle {
-    text-align: center; 
-    font-weight: bold;
-    margin: 5px auto;
-    width: 100px;
-}
-
-.boxtitle a {
-    float: left;
-}
-
-.boxtitle label {
-    float: left;
-}
-
-.box h3 {
-    font-size: small;
-    margin: 2px 0px 2px 0px;
-}
-
-.box ul {
-    list-style: none;
-    padding: 0 0 0 5px;
-    margin: 0;
-    background-color: #FFFFFF;
-}
-
-.box li ul {
-    padding: 0 0 0 8px;
-}
-
-.box li {
-    margin: 0;
-    background-position: 2px 2px;
-    position: relative;
-}
-
-.box li.selected {
-    background-color: #FFFF77;
-}
-
-.box a:link, .box a:visited {
-    color: black;
-    text-decoration: none;
-}
-
-a.block {
-    display: block;
-    padding: 2px 10px 2px 30px;
-}
-
-.box a:hover { 
-    color: #6AB0C5;
-    text-decoration: none;
-}
-
-.box img {
-    border: 0;
-}
-
-.box li.dragging {
-    background-color: #6AB0C5;
-}
-
-img.footer {
-    float: left;
-    margin-top: 10px;
-    margin-left: 18px;
-}
-
-li.inbox {
-    background-image: url("/static/pics/overview.png");
-    background-repeat: no-repeat;
-}
-
-li.trash {
-    background-image: url("/static/pics/trash.png");
-    background-repeat: no-repeat;
-}
-
-li.folder {
-    background-image: url("/static/pics/folder.png");
-    background-repeat: no-repeat;
-}
-
-li.drafts {
-    background-image: url("/static/pics/draft.png");
-    background-repeat: no-repeat;
-}
-
-li.subfolders {
-    background-image: url("/static/pics/folder.png");
-    background-repeat: no-repeat;
-}
-
-ul.hidden {
-    display: none;
-}
-
-ul.visible {
-    display: block;
-    padding-bottom: 0;
-}
-
-div.clickbox {
-    position: absolute;
-    left: 2px;
-    top: 2px;
-    width: 14px;
-    height: 14px;
-}
-
-div.collapsed {
-    background-image: url("../../pics/collapsed.png");
-    background-repeat: no-repeat;
-}
-
-div.expanded {
-    background-image: url("../../pics/expanded.png");
-    background-repeat: no-repeat;
-}
\ No newline at end of file
diff --git a/modoboa/extensions/webmail/static/webmail/css/webmail.css b/modoboa/extensions/webmail/static/webmail/css/webmail.css
index 5a13a2183..fd2ce8c38 100644
--- a/modoboa/extensions/webmail/static/webmail/css/webmail.css
+++ b/modoboa/extensions/webmail/static/webmail/css/webmail.css
@@ -300,9 +300,6 @@ li.droppable li{
 /*
  * Table
  */
-td > input[type=checkbox] {
-    margin: 0;
-}
 
 td[class*=openable] {
     cursor: pointer;