Add drawings

docs/_sass/main.sass

@@ -124,6 +124,8 @@
 .bd-category-name
   color: $text-strong
   position: relative
+  &.is-active
+    color: $link
 
 .bd-category-list
   @extend %bd-list

docs/_sass/specific.sass

@@ -2,6 +2,39 @@
   background-color: $primary
   color: $primary-invert
 
+.bd-has-drawing
+  position: relative
+
+.bd-drawing
+  display: none
+  pointer-events: none
+  position: absolute
+  &.bd-is-try-it-out
+    bottom: 100%
+    right: 100%
+  &.bd-is-love-letters
+    bottom: 110%
+    right: 10%
+  &.bd-is-crazy
+    left: -10%
+    top: 110%
+  &.bd-is-customize
+    right: -10%
+    top: 105%
+  &.bd-is-opinion-free
+    right: 100%
+    top: 110%
+  &.bd-is-join-us
+    bottom: 80%
+    left: 100%
+  &.bd-is-spam-free
+    bottom: 100%
+    right: 90%
+
++tablet
+  .bd-drawing
+    display: inline
+
 .bd-links
   counter-reset: bd-links