Typo in desc, and size mixin updates (#253)

* fix typo

* Remove height if using size mixin

Although, this looks like it is going away in version 5.

* Only 1 value if they are the same for size mixin

If you have 2 of the same values in size mixin, doesn't it compile to height: 100% 100%; width: 100% 100%;

http://www.sassmeister.com/gist/38c909c75a0474e6b587b849f2beb800

* dup sizes - I'd amend but I am working in browser

* Dup Sizes in commented out code

assets/sass/base/_accessibility.scss

@@ -4,10 +4,9 @@
 
 // Hide text meant only for screen readers
 .screen-reader-text {
-	@include size(rem(1) auto);
+	@include size(rem(1));
 
 	clip: rect(rem(1), rem(1), rem(1), rem(1));
-	height: rem(1);
 	overflow: hidden;
 	position: absolute;
 	white-space: nowrap; // do not smuch text in screen readers

assets/sass/base/_media.scss

@@ -142,7 +142,7 @@ img {
 
 // Video as background
 .video-as-background {
-	@include size(100% 100%);
+	@include size(100%);
 
 	display: block;
 	object-fit: cover;

assets/sass/modules/_hero.scss

@@ -13,7 +13,7 @@
 	// Transparent overlay (optional).
 	&::after {
 		@include position(absolute, 0 0 null null);
-		@include size(100% 100%);
+		@include size(100%);
 
 		background-color: rgba($color-black, 0.6);
 		content: "";
@@ -24,7 +24,7 @@
 	// &:after {
 	// 	@include linear-gradient(to bottom, rgba($color-black, 0) 0%, rgba($color-black, 0.50) 50%);
 	// 	@include position(absolute, 0 0 null null);
-	// 	@include size(100% 100%);
+	// 	@include size(100%);
 
 	// 	content: '';
 	// 	z-index: 2;

inc/acf.php

@@ -2,7 +2,7 @@
 /**
  * Custom ACF functions.
  *
- * A place to custom funcdtionality related to Advanced Custom Fields.
+ * A place to custom functionality related to Advanced Custom Fields.
  *
  * @package _s
  */