Rollup merge of rust-lang#106091 - GuillaumeGomez:correct-css-pseudo-element, r=notriddle

Use correct CSS pseudo-element selector

Pseudo-element should use "::" to not be confused with pseudo selectors (nice explanation here: https://css-tricks.com/to-double-colon-or-not-do-double-colon/).

r? ``@notriddle``

Author: matthiaskrgr

src/librustdoc/html/static/css/themes/ayu.css

@@ -215,10 +215,10 @@ pre.rust .kw-2, pre.rust .prelude-ty {}
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: rgb(124, 75, 15);
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0));
 }
 .toggle-line-inner {

src/librustdoc/html/static/css/themes/dark.css

@@ -111,10 +111,10 @@
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: rgb(124, 75, 15);
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0));
 }
 .toggle-line-inner {

src/librustdoc/html/static/css/themes/light.css

@@ -108,10 +108,10 @@
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: #f6fdb0;
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
 }
 .toggle-line-inner {