Remove other unsupported CSS features from the default stylesheet

For example, the rule `-input[type="hidden" i]` would have been ignored before,
because nwmatcher doesn't know how to handle ` i`. It would now apply (although
type would have to be "hidden", and not "HiDdEn" or "HIDDEN").

lib/jsdom/browser/default-stylesheet.js

@@ -124,13 +124,10 @@ q {
     display: inline
 }
 
-q:before {
-    content: open-quote;
-}
-
-q:after {
-    content: close-quote;
-}
+/* nwmatcher does not support ::before and ::after, so we can't render q
+correctly: https://html.spec.whatwg.org/multipage/rendering.html#phrasing-content-3
+TODO: add q::before and q::after selectors
+*/
 
 center {
     display: block;
@@ -425,7 +422,8 @@ input, textarea, keygen, select, button {
     text-align: start;
 }
 
-input[type="hidden" i] {
+/* TODO: Add " i" to attribute matchers to support case-insensitive matching */
+input[type="hidden"] {
     display: none
 }
 
@@ -439,7 +437,7 @@ input {
     cursor: auto;
 }
 
-input[type="search" i] {
+input[type="search"] {
     -webkit-appearance: searchfield;
     box-sizing: border-box;
 }
@@ -462,37 +460,37 @@ textarea {
     word-wrap: break-word;
 }
 
-input[type="password" i] {
+input[type="password"] {
     -webkit-text-security: disc !important;
 }
 
-input[type="hidden" i], input[type="image" i], input[type="file" i] {
+input[type="hidden"], input[type="image"], input[type="file"] {
     -webkit-appearance: initial;
     padding: initial;
     background-color: initial;
     border: initial;
 }
 
-input[type="file" i] {
+input[type="file"] {
     align-items: baseline;
     color: inherit;
     text-align: start !important;
 }
 
-input[type="radio" i], input[type="checkbox" i] {
+input[type="radio"], input[type="checkbox"] {
     margin: 3px 0.5ex;
     padding: initial;
     background-color: initial;
     border: initial;
 }
 
-input[type="button" i], input[type="submit" i], input[type="reset" i] {
+input[type="button"], input[type="submit"], input[type="reset"] {
     -webkit-appearance: push-button;
     -webkit-user-select: none;
     white-space: pre
 }
 
-input[type="button" i], input[type="submit" i], input[type="reset" i], button {
+input[type="button"], input[type="submit"], input[type="reset"], button {
     align-items: flex-start;
     text-align: center;
     cursor: default;
@@ -503,25 +501,25 @@ input[type="button" i], input[type="submit" i], input[type="reset" i], button {
     box-sizing: border-box
 }
 
-input[type="range" i] {
+input[type="range"] {
     -webkit-appearance: slider-horizontal;
     padding: initial;
     border: initial;
     margin: 2px;
     color: #909090;
 }
 
-input[type="button" i]:disabled, input[type="submit" i]:disabled, input[type="reset" i]:disabled,
+input[type="button"]:disabled, input[type="submit"]:disabled, input[type="reset"]:disabled,
 button:disabled, select:disabled, keygen:disabled, optgroup:disabled, option:disabled,
 select[disabled]>option {
     color: GrayText
 }
 
-input[type="button" i]:active, input[type="submit" i]:active, input[type="reset" i]:active, button:active {
+input[type="button"]:active, input[type="submit"]:active, input[type="reset"]:active, button:active {
     border-style: inset
 }
 
-input[type="button" i]:active:disabled, input[type="submit" i]:active:disabled, input[type="reset" i]:active:disabled, button:active:disabled {
+input[type="button"]:active:disabled, input[type="submit"]:active:disabled, input[type="reset"]:active:disabled, button:active:disabled {
     border-style: outset
 }
 
@@ -538,17 +536,17 @@ param {
     display: none
 }
 
-input[type="checkbox" i] {
+input[type="checkbox"] {
     -webkit-appearance: checkbox;
     box-sizing: border-box;
 }
 
-input[type="radio" i] {
+input[type="radio"] {
     -webkit-appearance: radio;
     box-sizing: border-box;
 }
 
-input[type="color" i] {
+input[type="color"] {
     -webkit-appearance: square-button;
     width: 44px;
     height: 23px;
@@ -558,7 +556,7 @@ input[type="color" i] {
     padding: 1px 2px;
 }
 
-input[type="color" i][list] {
+input[type="color"][list] {
     -webkit-appearance: menulist;
     width: 88px;
     height: 23px
@@ -690,15 +688,15 @@ input:focus, textarea:focus, keygen:focus, select:focus {
     outline-offset: -2px
 }
 
-input[type="button" i]:focus,
-input[type="checkbox" i]:focus,
-input[type="file" i]:focus,
-input[type="hidden" i]:focus,
-input[type="image" i]:focus,
-input[type="radio" i]:focus,
-input[type="reset" i]:focus,
-input[type="search" i]:focus,
-input[type="submit" i]:focus {
+input[type="button"]:focus,
+input[type="checkbox"]:focus,
+input[type="file"]:focus,
+input[type="hidden"]:focus,
+input[type="image"]:focus,
+input[type="radio"]:focus,
+input[type="reset"]:focus,
+input[type="search"]:focus,
+input[type="submit"]:focus {
     outline-offset: 0
 }
 
@@ -761,7 +759,7 @@ bdo {
     unicode-bidi: bidi-override;
 }
 
-textarea[dir=auto i] {
+textarea[dir=auto] {
     unicode-bidi: -webkit-plaintext;
 }