diff --git a/custom_overlay.css b/custom_overlay.css
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+/*
+===============================================================================
+ This file may contain extra CSS rules loaded on all apps page (*if* the app
+ nginx's conf does include the appropriate snippet) for the small YunoHost
+ button in bottom-right corner + portal overlay.
+
+ The yunohost button corresponds to : #ynh-overlay-switch
+ The yunohost portal overlay / iframe corresponds to : #ynh-overlay
+
+ BE CAREFUL that you should *not* add too-general rules that apply to
+ non-yunohost elements (for instance all 'a' or 'p' elements...) as it will
+ likely break app's rendering
+===============================================================================
+*/
+#ynh-overlay-switch {
+  background-image: url("./cloud.png");
+}
diff --git a/custom_portal.css b/custom_portal.css
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+/*
+===============================================================================
+ This file contain extra CSS rules to customize the YunoHost user portal and
+ can be used to customize app tiles, buttons, etc...
+===============================================================================
+*/
+@font-face {
+	font-family: 'NotoSans';
+	src: url("typo/NotoSans-Regular.ttf");
+	font-family: 'NotoSansBold';
+	src: url("typo/NotoSans-CondensedBold.ttf");
+}
+/* Global Main Setup */
+* {
+	font-family: 'NotoSans';
+}
+.element-invisible {
+    border: 0;
+    clip: rect(0 0 0 0);
+    height: 1px;
+    margin: -1px;
+    overflow: hidden;
+    padding: 0;
+    position: absolute;
+    width: 1px;
+}
+
+#ynh-logo {
+	margin-top: 20%;
+}
+
+.content {
+	max-width: 800px;
+	margin: 0 auto;
+}
+
+.ynh-user-portal {
+  background-image: url("pictures/background.jpg");
+  background-repeat: no-repeat;
+  background-size: cover;
+  background-position-x: center;
+}
+
+
+/* Login Rules */
+.messages, .login
+{
+	width: 800px;
+	padding: 4px 20px;
+}
+
+.ynh-wrapper
+{
+	background-image: url("pictures/login-logo.jpg");
+	background-repeat: no-repeat;
+	background-position-x: 50px;
+}
+
+.messages
+{
+	float: left;
+	background-color: #5d5446;
+	border-radius: 0px 0px 15px 15px;
+	margin-top: 256px;
+	
+	/* height: 312px; */
+	color : #c2a593;
+	
+	/* Typo Rules */
+	font-family: 'NotoSansBold';
+	font-size: 1.8em;
+	/*text-transform: capitalize;*/
+	font-variant: small-caps;
+	text-align: center;
+	
+	/* Drop Shadow */
+	box-shadow:  8px 8px 8px rgb(16, 28, 22);
+}
+
+.login
+{
+	background-color: #2c2b27;
+	height: 256px;
+	border-radius: 15px 15px 0px 0px;
+	box-shadow:  8px 8px 8px rgb(16, 28, 22);
+}
+
+.icon
+{
+	color: red;
+}
+.login-form
+{
+	float: right;
+	margin-top: -256px;
+	display: grid;
+	width: 400px;
+}
+
+.form-group
+{
+	display: grid;
+	grid-template-columns: 52px 90%;
+	/* width: 100%; */
+	height: 52px;
+	margin: 7px 0;
+	overflow: hidden;
+}
+
+.form-text
+{
+	width: 90%;
+	height: 52px;
+	padding: 0 5%;
+	border: 0;
+	font-family: 'NotoSansBold';
+	background-color: #5d5446;
+	color: #c2a593;
+}
+
+.icon-user, .icon-lock
+{
+	width: 52px;
+	height: 52px;
+}	
+.icon-user {
+	background-image: url("pictures/picto.jpg");
+}
+.icon-lock {
+	background-image: url("pictures/picto.jpg");
+	background-position: 0 -52px;
+}
+input[type="submit"] {
+	width: 400px;
+	height: 52px;
+	margin: 7px 0;
+	padding: 0 0 0 70px;
+	border: 0px;
+	background-image: url("pictures/picto.jpg");
+	background-position: 0 52px;
+	background-repeat: repeat-y;
+	background-color: #5d5446;
+
+	/* Typo Setup */
+	font-family: 'NotoSansBold';
+	color: #c2a593;
+	text-align: left;
+}
diff --git a/custom_portal.js b/custom_portal.js
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+/*
+===============================================================================
+ This JS file may be used to customize the YunoHost user portal *and* also
+ will be loaded in all app pages if the app nginx's conf does include the
+ appropriate snippet.
+
+ You can monkeypatch init_portal (loading of the user portal) and
+ init_portal_button_and_overlay (loading of the button and overlay...) to do
+ custom stuff
+===============================================================================
+*/
+
+/*
+ * Monkeypatch init_portal to customize the app tile style
+ *
+init_portal_original = init_portal;
+init_portal = function()
+{
+    init_portal_original();
+    // Some stuff here
+}
+*/
+
+/*
+ * Monkey patching example to do custom stuff when loading inside an app
+ *
+init_portal_button_and_overlay_original = init_portal_button_and_overlay;
+init_portal_button_and_overlay = function()
+{
+    init_portal_button_and_overlay_original();
+    // Custom stuff to do when loading inside an app
+}
+*/
diff --git a/pictures/background.jpg b/pictures/background.jpg
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diff --git a/pictures/login-logo.jpg b/pictures/login-logo.jpg
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diff --git a/pictures/logo.png b/pictures/logo.png
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diff --git a/pictures/picto.jpg b/pictures/picto.jpg
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diff --git a/typo/NotoSans-Bold.ttf b/typo/NotoSans-Bold.ttf
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diff --git a/typo/NotoSans-CondensedBold.ttf b/typo/NotoSans-CondensedBold.ttf
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diff --git a/typo/NotoSans-Regular.ttf b/typo/NotoSans-Regular.ttf
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