Reword the browser support comments.

Author: philipwalton

_sass/components/_holy-grail.scss

@@ -1,7 +1,8 @@
 /**
  * 1. Avoid the IE 10-11 `min-height` bug.
- * 2. Set `flex-shrink` to `0` to prevent browsers from letting these
- *    items shrink to smaller than their content's default minimum size.
+ * 2. Set `flex-shrink` to `0` to prevent Chrome, Opera, and Safari from
+ *    letting these items shrink to smaller than their content's default
+ *    minimum size.
  * 3. Use `%` instead of `vh` since `vh` is buggy in older mobile Safair.
  */
 

_sass/components/_site.scss

@@ -1,7 +1,8 @@
 /**
  * 1. Avoid the IE 10-11 `min-height` bug.
- * 2. Set `flex-shrink` to `0` to prevent browsers from letting these
- *    items shrink to smaller than their content's default minimum size.
+ * 2. Set `flex-shrink` to `0` to prevent Chrome, Opera, and Safari from
+ *    letting these items shrink to smaller than their content's default
+ *    minimum size.
  * 3. Use `%` instead of `vh` since `vh` is buggy in older mobile Safair.
  */