style.css: remove deprecated extensions

stylesheets/style.css

@@ -498,7 +498,7 @@ input.delete {
 }
 
 @media (max-width: 48em) {
-  .intro > .user-controls {
+  .user-controls {
     clear: both;
     float: right;
   }
@@ -1244,10 +1244,6 @@ pre {
   cursor: pointer;
   white-space:nowrap;
   display: inline-block;
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  -ms-user-select: none;
-  -o-user-select: none;
   user-select: none;
 }
 .poster_id:hover {
@@ -1421,14 +1417,6 @@ div.boardlist a {
     text-decoration: none;
 }
 
-@-moz-document url-prefix() {
-
-div.boardlist {
-    word-spacing:-3px;
-}
-
-}
-
 /* Threads */
 /* Thread Footer */
 #thread-interactions {
@@ -1459,10 +1447,6 @@ div.boardlist {
 	float: right;
 	text-align: right;
 }
-#delete-fields {
-}
-#report-fields {
-}
 
 /* threadwatcher */
 #watchlist {
@@ -1576,14 +1560,10 @@ li.mix {
     padding: 2px;
     font-size: 10pt;
     box-sizing: border-box;
-    -webkit-box-sizing:border-box;
-    -moz-box-sizing: border-box;
 }
 #quick-reply textarea {
     min-width: 100%;
     box-sizing: border-box;
-    -webkit-box-sizing:border-box;
-    -moz-box-sizing: border-box;
     font-size: 10pt;
     resize: both;
 }
@@ -1877,8 +1857,7 @@ a.tag-link {
     overflow: hidden;
     white-space: nowrap;
 }
-li.tag-item a.tag-link {
-}
+
 td.board-tags a.tag-link {
     display: inline-block;
     margin: 0 0.4em 0 0;
@@ -1956,16 +1935,13 @@ td.board-tags a.tag-link {
 
 #gallery_images img {
   opacity: 0.6;
-  -webkit-transition: all 0.5s;
-          transition: all 0.5s;
+  transition: all 0.5s;
 }
 #gallery_images img:hover, #gallery_images img.active {
   opacity: 1;
 }
 #gallery_images img.active {
-  -webkit-box-shadow: 0px 0px 29px 2px rgba(255,255,255,1);
-     -moz-box-shadow: 0px 0px 29px 2px rgba(255,255,255,1);
-          box-shadow: 0px 0px 29px 2px rgba(255,255,255,1);
+  box-shadow: 0px 0px 29px 2px rgba(255,255,255,1);
   z-index: 1;
 }
 #gallery_main img, #gallery_main video {