added type helpers

vue-theme/src/sss/_typography.sss

@@ -0,0 +1,25 @@
+@import './variables.sss'
+
+.t
+    &-cntr
+        text-align: center
+    &-left
+        text-align: left
+    &-b
+        text-weight: bold
+    &-i
+        text-style: italic
+    &-up
+        text-transform: uppercase
+    &-cap
+        text-transform: capitalize
+    &-sans
+        font-family: $sans
+    &-serif
+        font-family: $serif
+    &-mono
+        font-family: $mono
+
+a
+    &:hover
+        cursor: pointer

vue-theme/src/sss/index.js

@@ -1,3 +1,4 @@
 // Include all your *.sss Sugarss files
 import './_reset.sss'
+import './_typography.sss'
 import './_helpers.sss'