Fix display of search result crate filter dropdown

Author: GuillaumeGomez

src/librustdoc/html/static/css/rustdoc.css

@@ -924,7 +924,6 @@ table,
 #crate-search {
 	min-width: 115px;
 	margin-top: 5px;
-	margin-left: 0.25em;
 	padding-left: 0.3125em;
 	padding-right: 23px;
 	border: 1px solid;
@@ -941,6 +940,8 @@ table,
 	background-size: 20px;
 	background-position: calc(100% - 1px) 56%;
 	background-image: /* AUTOREPLACE: */url("down-arrow.svg");
+	max-width: 100%;
+	text-overflow: ellipsis;
 }
 .search-container {
 	margin-top: 4px;