Improve line-height in main, following Uyen's suggestions

Change-Id: Ic5f84cb9acbfdfef7151700f2f42de4d5374a6f5
diff --git a/dev/scss/main/main.scss b/dev/scss/main/main.scss
index e8c062d..78bbad4 100644
--- a/dev/scss/main/main.scss
+++ b/dev/scss/main/main.scss
@@ -40,6 +40,8 @@
   p {
     text-align: justify;
     hyphens:    auto;
+    font-size: 1rem;
+    line-height: 1.5rem;
   }
 
   h2#page-top {