More index sections

docs/_sass/index.sass

@@ -1,13 +1,27 @@
-// Columns
+// Index common
 
-.bd-columns-header
+.bd-index-header
   margin-bottom: 3rem
   text-align: center
+  a
+    color: currentColor
+    &:hover
+      color: $blue
+      strong
+        color: currentColor
   strong
-    color: $primary
     font-weight: $weight-semibold
+  .title
+    strong
+      color: $primary
   .subtitle
     color: $grey-light
+    strong
+      color: currentColor
+  &.bd-is-left
+    text-align: left
+
+// Columns
 
 #grid
   .notification

docs/_sass/twitter.sass

@@ -1,23 +1,24 @@
 $tw-black: #1c2022
 $tw-blue: #2b7bb9
 $tw-grey: #697882
+$tw-border: #e1e8ed
 
 .bd-tws-home
-  background-color: $background
-  display: flex
-  flex-wrap: wrap
-  overflow: auto
-  padding: 20px
+  background-color: $white-bis
 
 .bd-tw
   background-color: #fff
-  border: 2px solid #e1e8ed
+  border: 2px solid $background
   border-radius: $radius-large
   color: $tw-grey
   flex-shrink: 0
   font-family: Helvetica, Roboto, "Segoe UI", Calibri, sans-serif
   font-size: 16px
+  max-width: 420px
   padding: 20px
+  &.bd-is-grey
+    background-color: $white-bis
+    border: none
 
 .bd-tw-header
   align-items: stretch
@@ -163,7 +164,7 @@ $tw-grey: #697882
 
 .twitter-tweet:not(.twitter-tweet-rendered)
   background-color: $white
-  border: 1px solid #e1e8ed
+  border: 1px solid $tw-border
   border-radius: 5px
   color: $tw-grey
   font-size: 14px