Add dropdown button

sass/components/_all.sass

@@ -2,6 +2,7 @@
 
 @import "breadcrumb.sass"
 @import "card.sass"
+@import "dropdown.sass"
 @import "level.sass"
 @import "media.sass"
 @import "menu.sass"
@@ -11,4 +12,4 @@
 @import "navbar.sass"
 @import "pagination.sass"
 @import "panel.sass"
-@import "tabs.sass"
+@import "tabs.sass"

sass/components/dropdown.sass

@@ -0,0 +1,64 @@
+$dropdown-content-background: $white !default
+$dropdown-content-arrow: $link !default
+$dropdown-content-offset: 4px !default
+$dropdown-content-radius: $radius !default
+$dropdown-content-shadow: 0 2px 3px rgba($black, 0.1), 0 0 0 1px rgba($black, 0.1) !default
+$dropdown-content-z: 20 !default
+
+$dropdown-item: $grey-dark !default
+$dropdown-item-hover: $black !default
+$dropdown-item-hover-background: $background !default
+$dropdown-item-active: $black !default
+$dropdown-item-active-background: transparent !default
+
+$dropdown-divider-background: $border !default
+
+.dropdown
+  display: inline-flex
+  position: relative
+  vertical-align: top
+  &.is-active,
+  &.is-hoverable:hover
+    .dropdown-container
+      display: block
+
+.dropdown-container
+  display: none
+  left: 0
+  max-width: 20rem
+  min-width: 12rem
+  padding-top: $dropdown-content-offset
+  position: absolute
+  top: 100%
+  width: 100%
+  z-index: $dropdown-content-z
+
+.dropdown-content
+  background-color: $dropdown-content-background
+  border-radius: $dropdown-content-radius
+  box-shadow: $dropdown-content-shadow
+  padding-bottom: 0.5rem
+  padding-top: 0.5rem
+
+.dropdown-item
+  color: $dropdown-item
+  display: block
+  font-size: 0.875rem
+  line-height: 1.5
+  padding: 0.375rem 1rem
+  position: relative
+
+a.dropdown-item
+  padding-right: 3rem
+  white-space: nowrap
+  &:hover,
+  &.is-active
+    background-color: $dropdown-item-hover-background
+    color: $dropdown-item-hover
+
+.dropdown-divider
+  background-color: $dropdown-divider-background
+  border: none
+  display: block
+  height: 1px
+  margin: 0.5rem 0

sass/layout/section.sass

@@ -1,5 +1,6 @@
 .section
   background-color: $white
+  min-height: 100vh
   padding: 3rem 1.5rem
   // Responsiveness
   +desktop