Use explicit case-insensitive attribute-value matching in UA-stylesheets

Source/core/css/quirks.css

Index: Source/core/css/quirks.css
diff --git a/Source/core/css/quirks.css b/Source/core/css/quirks.css
index 4845591d6007583247e8abf7634b9143fdc8062f..38e3ac83615055da0af8a6dea483bbdc4186e1cc 100644
--- a/Source/core/css/quirks.css
+++ b/Source/core/css/quirks.css
@@ -22,10 +22,10 @@
  */
 
 /* Give floated images margins of 3px */
-img[align="left"] {
+img[align="left" i] {
     margin-right: 3px;
 }
-img[align="right"] {
+img[align="right" i] {
     margin-left: 3px;
 }
 
@@ -43,7 +43,7 @@ table {
 }
 
 /* This will apply only to text fields, since all other inputs already use border box sizing */
-input:not([type=image]), textarea {
+input:not([type=image i]), textarea {
     box-sizing: border-box;
 }