diff --git a/app/assets/stylesheets/css/tooltip.css b/app/assets/stylesheets/css/tooltip.css
new file mode 100644
index 0000000..3890d82
--- /dev/null
+++ b/app/assets/stylesheets/css/tooltip.css
@@ -0,0 +1,168 @@
+[data-tooltip] {
+  --arrow-size: 5px;
+  position: relative;
+  z-index: 10;
+}
+
+/* Positioning and visibility settings of the tooltip */
+[data-tooltip]:before,
+[data-tooltip]:after {
+  position: absolute;
+  visibility: hidden;
+  opacity: 0;
+  left: 50%;
+  bottom: calc(100% + var(--arrow-size));
+  pointer-events: none;
+  transition: 0.2s;
+  will-change: transform;
+}
+
+/* The actual tooltip with a dynamic width */
+[data-tooltip]:before {
+  content: attr(data-tooltip);
+  padding: 10px 18px;
+  min-width: 50px;
+  max-width: 300px;
+  width: max-content;
+  width: -moz-max-content;
+  border-radius: 6px;
+  font-size: 14px;
+  background-color: rgba(59, 72, 80, 0.9);
+  background-image: linear-gradient(30deg,
+      rgba(59, 72, 80, 0.44),
+      rgba(59, 68, 75, 0.44),
+      rgba(60, 82, 88, 0.44));
+  box-shadow: 0px 0px 24px rgba(0, 0, 0, 0.2);
+  color: #fff;
+  text-align: center;
+  white-space: pre-wrap;
+  transform: translate(-50%, calc(0px - var(--arrow-size))) scale(0.5);
+}
+
+/* Tooltip arrow */
+[data-tooltip]:after {
+  content: '';
+  border-style: solid;
+  border-width: var(--arrow-size) var(--arrow-size) 0px var(--arrow-size);
+  /* CSS triangle */
+  border-color: rgba(55, 64, 70, 0.9) transparent transparent transparent;
+  transition-duration: 0s;
+  /* If the mouse leaves the element, 
+                              the transition effects for the 
+                              tooltip arrow are "turned off" */
+  transform-origin: top;
+  /* Orientation setting for the
+                              slide-down effect */
+  transform: translateX(-50%) scaleY(0);
+}
+
+/* Tooltip becomes visible at hover */
+[data-tooltip]:hover:before,
+[data-tooltip]:hover:after {
+  visibility: visible;
+  opacity: 1;
+}
+
+/* Scales from 0.5 to 1 -> grow effect */
+[data-tooltip]:hover:before {
+  transition-delay: 0.3s;
+  transform: translate(-50%, calc(0px - var(--arrow-size))) scale(1);
+}
+
+/* 
+  Arrow slide down effect only on mouseenter (NOT on mouseleave)
+*/
+[data-tooltip]:hover:after {
+  transition-delay: 0.5s;
+  /* Starting after the grow effect */
+  transition-duration: 0.2s;
+  transform: translateX(-50%) scaleY(1);
+}
+
+/*
+  That's it for the basic tooltip.
+
+  If you want some adjustability
+  here are some orientation settings you can use:
+*/
+
+/* LEFT */
+/* Tooltip + arrow */
+[data-tooltip-location="left"]:before,
+[data-tooltip-location="left"]:after {
+  left: auto;
+  right: calc(100% + var(--arrow-size));
+  bottom: 50%;
+}
+
+/* Tooltip */
+[data-tooltip-location="left"]:before {
+  transform: translate(calc(0px - var(--arrow-size)), 50%) scale(0.5);
+}
+
+[data-tooltip-location="left"]:hover:before {
+  transform: translate(calc(0px - var(--arrow-size)), 50%) scale(1);
+}
+
+/* Arrow */
+[data-tooltip-location="left"]:after {
+  border-width: var(--arrow-size) 0px var(--arrow-size) var(--arrow-size);
+  border-color: transparent transparent transparent rgba(55, 64, 70, 0.9);
+  transform-origin: left;
+  transform: translateY(50%) scaleX(0);
+}
+
+[data-tooltip-location="left"]:hover:after {
+  transform: translateY(50%) scaleX(1);
+}
+
+
+
+/* RIGHT */
+[data-tooltip-location="right"]:before,
+[data-tooltip-location="right"]:after {
+  left: calc(100% + var(--arrow-size));
+  bottom: 50%;
+}
+
+[data-tooltip-location="right"]:before {
+  transform: translate(var(--arrow-size), 50%) scale(0.5);
+}
+
+[data-tooltip-location="right"]:hover:before {
+  transform: translate(var(--arrow-size), 50%) scale(1);
+}
+
+[data-tooltip-location="right"]:after {
+  border-width: var(--arrow-size) var(--arrow-size) var(--arrow-size) 0px;
+  border-color: transparent rgba(55, 64, 70, 0.9) transparent transparent;
+  transform-origin: right;
+  transform: translateY(50%) scaleX(0);
+}
+
+[data-tooltip-location="right"]:hover:after {
+  transform: translateY(50%) scaleX(1);
+}
+
+
+
+/* BOTTOM */
+[data-tooltip-location="bottom"]:before,
+[data-tooltip-location="bottom"]:after {
+  top: calc(100% + var(--arrow-size));
+  bottom: auto;
+}
+
+[data-tooltip-location="bottom"]:before {
+  transform: translate(-50%, var(--arrow-size)) scale(0.5);
+}
+
+[data-tooltip-location="bottom"]:hover:before {
+  transform: translate(-50%, var(--arrow-size)) scale(1);
+}
+
+[data-tooltip-location="bottom"]:after {
+  border-width: 0px var(--arrow-size) var(--arrow-size) var(--arrow-size);
+  border-color: transparent transparent rgba(55, 64, 70, 0.9) transparent;
+  transform-origin: bottom;
+}
\ No newline at end of file
diff --git a/app/views/layouts/_coucou.html.erb b/app/views/layouts/_coucou.html.erb
deleted file mode 100644
index cd5c884..0000000
--- a/app/views/layouts/_coucou.html.erb
+++ /dev/null
@@ -1,3 +0,0 @@
-NOTIFICATION
-
-COUCOU
\ No newline at end of file
diff --git a/app/views/layouts/_navbar.html.erb b/app/views/layouts/_navbar.html.erb
index 08bdbad..b451911 100644
--- a/app/views/layouts/_navbar.html.erb
+++ b/app/views/layouts/_navbar.html.erb
@@ -1,4 +1,6 @@
-<nav class='bg-slate-800 text-2xl justify-items-center items-center gap-4 p-4 flex flex-row text-yellow-600'>
-  <%= fa_icon :road, size: 2 %>
-  <%= Rails.configuration.application_title %>
+<nav class='bg-slate-800 text-2xl justify-items-center p-2 flex text-slate-200'>
+  <%= link_to root_path, class: 'items-center flex gap-4 hover:bg-slate-700 p-2 text-2xl' do %>
+    <%= fa_icon :road, size: 2 %>
+    <%= Rails.configuration.application_title %>
+  <% end %>
 </nav>