diff --git a/app/main/assets/css/hint.css b/app/main/assets/css/hint.css
new file mode 100644
index 0000000..6298eb0
--- /dev/null
+++ b/app/main/assets/css/hint.css
@@ -0,0 +1,307 @@
+/*! Hint.css - v1.3.5 - 2015-06-16
+* http://kushagragour.in/lab/hint/
+* Copyright (c) 2015 Kushagra Gour; Licensed MIT */
+
+/*-------------------------------------*\
+	HINT.css - A CSS tooltip library
+\*-------------------------------------*/
+/**
+ * HINT.css is a tooltip library made in pure CSS.
+ *
+ * Source: https://github.com/chinchang/hint.css
+ * Demo: http://kushagragour.in/lab/hint/
+ *
+ * Release under The MIT License
+ *
+ */
+/**
+ * source: hint-core.scss
+ *
+ * Defines the basic styling for the tooltip.
+ * Each tooltip is made of 2 parts:
+ * 	1) body (:after)
+ * 	2) arrow (:before)
+ *
+ * Classes added:
+ * 	1) hint
+ */
+.hint, [data-hint] {
+  position: relative;
+  display: inline-block;
+  /**
+   * tooltip arrow
+   */
+  /**
+   * tooltip body
+   */ }
+  .hint:before, .hint:after, [data-hint]:before, [data-hint]:after {
+    position: absolute;
+    -webkit-transform: translate3d(0, 0, 0);
+    -moz-transform: translate3d(0, 0, 0);
+    transform: translate3d(0, 0, 0);
+    visibility: hidden;
+    opacity: 0;
+    z-index: 1000000;
+    pointer-events: none;
+    -webkit-transition: 0.3s ease;
+    -moz-transition: 0.3s ease;
+    transition: 0.3s ease;
+    -webkit-transition-delay: 0ms;
+    -moz-transition-delay: 0ms;
+    transition-delay: 0ms; }
+  .hint:hover:before, .hint:hover:after, .hint:focus:before, .hint:focus:after, [data-hint]:hover:before, [data-hint]:hover:after, [data-hint]:focus:before, [data-hint]:focus:after {
+    visibility: visible;
+    opacity: 1; }
+  .hint:hover:before, .hint:hover:after, [data-hint]:hover:before, [data-hint]:hover:after {
+    -webkit-transition-delay: 100ms;
+    -moz-transition-delay: 100ms;
+    transition-delay: 100ms; }
+  .hint:before, [data-hint]:before {
+    content: '';
+    position: absolute;
+    background: transparent;
+    border: 6px solid transparent;
+    z-index: 1000001; }
+  .hint:after, [data-hint]:after {
+    content: attr(data-hint);
+    background: #383838;
+    color: white;
+    padding: 8px 10px;
+    font-size: 12px;
+    line-height: 12px;
+    white-space: nowrap; }
+
+/**
+ * source: hint-position.scss
+ *
+ * Defines the positoning logic for the tooltips.
+ *
+ * Classes added:
+ * 	1) hint--top
+ * 	2) hint--bottom
+ * 	3) hint--left
+ * 	4) hint--right
+ */
+/**
+ * set default color for tooltip arrows
+ */
+.hint--top:before {
+  border-top-color: #383838; }
+
+.hint--bottom:before {
+  border-bottom-color: #383838; }
+
+.hint--left:before {
+  border-left-color: #383838; }
+
+.hint--right:before {
+  border-right-color: #383838; }
+
+/**
+ * top tooltip
+ */
+.hint--top:before {
+  margin-bottom: -12px; }
+.hint--top:after {
+  margin-left: -18px; }
+.hint--top:before, .hint--top:after {
+  bottom: 100%;
+  left: 50%; }
+.hint--top:hover:after, .hint--top:hover:before, .hint--top:focus:after, .hint--top:focus:before {
+  -webkit-transform: translateY(-8px);
+  -moz-transform: translateY(-8px);
+  transform: translateY(-8px); }
+
+/**
+ * bottom tooltip
+ */
+.hint--bottom:before {
+  margin-top: -12px; }
+.hint--bottom:after {
+  margin-left: -18px; }
+.hint--bottom:before, .hint--bottom:after {
+  top: 100%;
+  left: 50%; }
+.hint--bottom:hover:after, .hint--bottom:hover:before, .hint--bottom:focus:after, .hint--bottom:focus:before {
+  -webkit-transform: translateY(8px);
+  -moz-transform: translateY(8px);
+  transform: translateY(8px); }
+
+/**
+ * right tooltip
+ */
+.hint--right:before {
+  margin-left: -12px;
+  margin-bottom: -6px; }
+.hint--right:after {
+  margin-bottom: -14px; }
+.hint--right:before, .hint--right:after {
+  left: 100%;
+  bottom: 50%; }
+.hint--right:hover:after, .hint--right:hover:before, .hint--right:focus:after, .hint--right:focus:before {
+  -webkit-transform: translateX(8px);
+  -moz-transform: translateX(8px);
+  transform: translateX(8px); }
+
+/**
+ * left tooltip
+ */
+.hint--left:before {
+  margin-right: -12px;
+  margin-bottom: -6px; }
+.hint--left:after {
+  margin-bottom: -14px; }
+.hint--left:before, .hint--left:after {
+  right: 100%;
+  bottom: 50%; }
+.hint--left:hover:after, .hint--left:hover:before, .hint--left:focus:after, .hint--left:focus:before {
+  -webkit-transform: translateX(-8px);
+  -moz-transform: translateX(-8px);
+  transform: translateX(-8px); }
+
+/**
+ * source: hint-theme.scss
+ *
+ * Defines basic theme for tooltips.
+ *
+ */
+.hint, [data-hint] {
+  /**
+   * tooltip body
+   */ }
+  .hint:after, [data-hint]:after {
+    text-shadow: 0 -1px 0px black;
+    box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.3); }
+
+/**
+ * source: hint-color-types.scss
+ *
+ * Contains tooltips of various types based on color differences.
+ *
+ * Classes added:
+ * 	1) hint--error
+ * 	2) hint--warning
+ * 	3) hint--info
+ * 	4) hint--success
+ *
+ */
+/**
+ * Error
+ */
+.hint--error:after {
+  background-color: #b34e4d;
+  text-shadow: 0 -1px 0px #592726; }
+.hint--error.hint--top:before {
+  border-top-color: #b34e4d; }
+.hint--error.hint--bottom:before {
+  border-bottom-color: #b34e4d; }
+.hint--error.hint--left:before {
+  border-left-color: #b34e4d; }
+.hint--error.hint--right:before {
+  border-right-color: #b34e4d; }
+
+/**
+ * Warning
+ */
+.hint--warning:after {
+  background-color: #c09854;
+  text-shadow: 0 -1px 0px #6c5328; }
+.hint--warning.hint--top:before {
+  border-top-color: #c09854; }
+.hint--warning.hint--bottom:before {
+  border-bottom-color: #c09854; }
+.hint--warning.hint--left:before {
+  border-left-color: #c09854; }
+.hint--warning.hint--right:before {
+  border-right-color: #c09854; }
+
+/**
+ * Info
+ */
+.hint--info:after {
+  background-color: #3986ac;
+  text-shadow: 0 -1px 0px #193b4d; }
+.hint--info.hint--top:before {
+  border-top-color: #3986ac; }
+.hint--info.hint--bottom:before {
+  border-bottom-color: #3986ac; }
+.hint--info.hint--left:before {
+  border-left-color: #3986ac; }
+.hint--info.hint--right:before {
+  border-right-color: #3986ac; }
+
+/**
+ * Success
+ */
+.hint--success:after {
+  background-color: #458746;
+  text-shadow: 0 -1px 0px #1a321a; }
+.hint--success.hint--top:before {
+  border-top-color: #458746; }
+.hint--success.hint--bottom:before {
+  border-bottom-color: #458746; }
+.hint--success.hint--left:before {
+  border-left-color: #458746; }
+.hint--success.hint--right:before {
+  border-right-color: #458746; }
+
+/**
+ * source: hint-always.scss
+ *
+ * Defines a persisted tooltip which shows always.
+ *
+ * Classes added:
+ * 	1) hint--always
+ *
+ */
+.hint--always:after, .hint--always:before {
+  opacity: 1;
+  visibility: visible; }
+.hint--always.hint--top:after, .hint--always.hint--top:before {
+  -webkit-transform: translateY(-8px);
+  -moz-transform: translateY(-8px);
+  transform: translateY(-8px); }
+.hint--always.hint--bottom:after, .hint--always.hint--bottom:before {
+  -webkit-transform: translateY(8px);
+  -moz-transform: translateY(8px);
+  transform: translateY(8px); }
+.hint--always.hint--left:after, .hint--always.hint--left:before {
+  -webkit-transform: translateX(-8px);
+  -moz-transform: translateX(-8px);
+  transform: translateX(-8px); }
+.hint--always.hint--right:after, .hint--always.hint--right:before {
+  -webkit-transform: translateX(8px);
+  -moz-transform: translateX(8px);
+  transform: translateX(8px); }
+
+/**
+ * source: hint-rounded.scss
+ *
+ * Defines rounded corner tooltips.
+ *
+ * Classes added:
+ * 	1) hint--rounded
+ *
+ */
+.hint--rounded:after {
+  border-radius: 4px; }
+
+/**
+ * source: hint-effects.scss
+ *
+ * Defines various transition effects for the tooltips.
+ *
+ * Classes added:
+ * 	1) hint--no-animate
+ * 	2) hint--bounce
+ *
+ */
+.hint--no-animate:before, .hint--no-animate:after {
+  -webkit-transition-duration: 0ms;
+  -moz-transition-duration: 0ms;
+  transition-duration: 0ms; }
+
+.hint--bounce:before, .hint--bounce:after {
+  -webkit-transition: opacity 0.3s ease, visibility 0.3s ease, -webkit-transform 0.3s cubic-bezier(0.71, 1.7, 0.77, 1.24);
+  -moz-transition: opacity 0.3s ease, visibility 0.3s ease, -moz-transform 0.3s cubic-bezier(0.71, 1.7, 0.77, 1.24);
+  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s cubic-bezier(0.71, 1.7, 0.77, 1.24); }
diff --git a/app/main/config/dependencies.rb b/app/main/config/dependencies.rb
index 886bf7d..4fb70de 100644
--- a/app/main/config/dependencies.rb
+++ b/app/main/config/dependencies.rb
@@ -4,5 +4,6 @@
 # bootstrap css framework
 component 'bootstrap'
 
-
 Opal.use_gem("salama")
+
+css_file "hint.css"