diff --git a/src/userContent/addons.css b/src/userContent/addons.css
new file mode 100644
index 0000000..2755b0f
--- /dev/null
+++ b/src/userContent/addons.css
@@ -0,0 +1,8 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:addons"), url-prefix("about:addons") {
+    :root {
+        --section-width: min(664px, 100%) !important;
+    }
+}
diff --git a/src/userContent/config.css b/src/userContent/config.css
new file mode 100644
index 0000000..a1a80b2
--- /dev/null
+++ b/src/userContent/config.css
@@ -0,0 +1,37 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:config") {
+    #search-container,
+    #toolbar, #prefs {
+        min-width: 300px !important;
+    }
+
+    @media (max-width: 644px) {
+        #toolbar {
+            flex-direction: column;
+        }
+
+        #about-config-search {
+            max-width: 100%;
+        }
+
+        #prefs {
+            word-wrap: anywhere;
+        }
+
+        .checkbox-container {
+            margin-top: 5px;
+        }
+    }
+
+    @media (max-width: 500px) {
+        tr {
+            font-size: 12px;
+        }
+
+        th {
+            padding-left: 8px !important;
+        }
+    }
+}
diff --git a/src/userContent/license.css b/src/userContent/license.css
new file mode 100644
index 0000000..6e5c8fd
--- /dev/null
+++ b/src/userContent/license.css
@@ -0,0 +1,11 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:license") {
+    @media (max-width: 500px) {
+        .license-header {
+            background-image: none !important;
+            padding-inline-end: unset !important;
+        }
+    }
+}
diff --git a/src/userContent/logins.css b/src/userContent/logins.css
new file mode 100644
index 0000000..b5ae43a
--- /dev/null
+++ b/src/userContent/logins.css
@@ -0,0 +1,24 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:logins") {
+    .container {
+        min-width: 300px !important;
+    }
+
+    @media (max-width: 700px) {
+        body {
+            --sidebar-width: 200px !important;
+            grid-template-columns: var(--sidebar-width) 1fr !important;
+        }
+
+        .edit-button, .delete-button {
+            font-size: 0 !important;
+            background-position: center;
+        }
+
+        #branding-logo {
+            display: none;
+        }
+    }
+}
diff --git a/src/userContent/policies.css b/src/userContent/policies.css
new file mode 100644
index 0000000..022b494
--- /dev/null
+++ b/src/userContent/policies.css
@@ -0,0 +1,11 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:policies"), url-prefix("about:policies") {
+    @media (max-width: 830px) {
+        tbody.collapsible td,
+        .active-policies td {
+            word-wrap: anywhere;
+        }
+    }
+}
diff --git a/src/userContent/protections.css b/src/userContent/protections.css
new file mode 100644
index 0000000..27f23ca
--- /dev/null
+++ b/src/userContent/protections.css
@@ -0,0 +1,49 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:protections") {
+    #report-content {
+        width: calc(100% - 16px) !important;
+        max-width: 800px !important;
+    }
+
+    /* hide element with Firefox for Android and iOS ad */
+    .lockwise-card .card-body,
+    #mobile-hanger {
+        display: none !important;
+    }
+
+    @media (max-width: 800px) {
+        #report-content {
+            margin: 16px 8px !important;
+        }
+
+        .icon {
+            width: 32px !important;
+            height: 32px !important;
+        }
+
+        .body-wrapper {
+            /* make trackers report to fill the entire card width */
+            grid-column-start: 1 !important;
+            grid-column-end: -1 !important;
+        }
+
+        #manage-protections,
+        #sign-up-for-monitor-link,
+        #save-passwords-button,
+        #get-proxy-extension-link {
+            /* move button on a separate row */
+            grid-area: 2 / 1 / 2 / 6 !important;
+        }
+
+        .card-header .wrapper {
+            grid-row-gap: 8px !important;
+        }
+
+        .card:not(.has-logins) .wrapper div:nth-child(1) {
+            /* make card title to use more width */
+            grid-column-end: -1 !important;
+        }
+    }
+}
diff --git a/src/userContent/rights.css b/src/userContent/rights.css
new file mode 100644
index 0000000..c5d9505
--- /dev/null
+++ b/src/userContent/rights.css
@@ -0,0 +1,11 @@
+/* Copyright 2021 Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document url("about:rights") {
+    @media (max-width: 500px) {
+        .rights-header {
+            background-image: none !important;
+            padding-inline-end: unset !important;
+        }
+    }
+}
diff --git a/src/userContent/preferences.css b/src/userContent/sidebar.css
similarity index 61%
rename from src/userContent/preferences.css
rename to src/userContent/sidebar.css
index 3bd8eaf..e6023de 100644
--- a/src/userContent/preferences.css
+++ b/src/userContent/sidebar.css
@@ -1,10 +1,19 @@
-@-moz-document url("about:preferences"), url-prefix("about:preferences") {
+/* Copyright 2021 plata, Anri Dellal
+   SPDX-License-Identifier: GPL-3.0-or-later */
+
+@-moz-document regexp("about:(preferences|addons|policies).*") {
+    .category-icon {
+        user-select: none !important;
+    }
+
     @media (max-width: 700px) {
         /* avoid that sidebar is too wide */
         :root {
             --in-content-sidebar-width: 50px !important;
+            --sidebar-width: 50px !important;
         }
 
+        /* reduce space around category icons */
         #categories > .category {
             margin-inline-start: auto !important;
             padding-inline: auto !important;
@@ -14,13 +23,14 @@
             display: none !important;
         }
 
+        /* reduce space around footer icons (addons, help) */
         .sidebar-footer-list {
             margin-inline: auto !important;
             padding-inline: auto !important;
         }
 
         .sidebar-footer-label {
-            display:none !important;
+            display: none !important;
         }
     }