安装此插件，您将看到所有元素、类和IDhttps://github.com/bueltge/WordPress-Admin-Style

*Note: For Frontend side - 这是我在做了很多研究之后提取的列表；wordpress中的默认css样式。我尽最大努力研究每件事，尽可能准确地组织每件事。如果您发现任何遗漏或不完整的内容，请在评论中填写。我希望它可以帮助您开发所需的插件和主题*

/* WP WYSIWYG Editor Styles */

.entry-content img {
    margin: 0 0 1.5em 0;
    }

.alignleft, img.alignleft {
    margin-right: 1.5em;
    display: inline;
    float: left;
    }
.alignright, img.alignright {
    margin-left: 1.5em;
    display: inline;
    float: right;
    }
.aligncenter, img.aligncenter {
    margin-right: auto;
    margin-left: auto;
    display: block;
    clear: both;
    }
.alignnone, img.alignnone {}
.wp-caption {
    margin-bottom: 1.5em;
    text-align: center;
    padding-top: 5px;
    }
.wp-caption img {
    border: 0 none;
    padding: 0;
    margin: 0;
    }
.wp-caption p.wp-caption-text {
    line-height: 1.5;
    font-size: 10px;
    margin: 0;
    }
.wp-smiley {
    margin: 0 !important;
    max-height: 1em;
    }
blockquote.left {
    margin-right: 20px;
    text-align: right;
    margin-left: 0;
    width: 33%;
    float: left;
    }
blockquote.right {
    margin-left: 20px;
    text-align: left;
    margin-right: 0;
    width: 33%;
    float: right;
    }
.gallery dl {}
.gallery dt {}
.gallery dd {}
.gallery dl a {}
.gallery dl img {}
.gallery-caption {}

.size-full {}
.size-large {}
.size-medium {}
.size-thumbnail {}

/* WP CSS - Miscellaneous Styles */

/* category links */
 li.categories {}  
 li.cat-item {}
 li.cat-item-{id} {}
 li.current-cat {}
 li.current-cat-parent {}
 ul.children {}

/* blogroll links */
.linkcat {}
.blogroll {}

/* read-more links */
.more-link {}

/* WP CSS - Page Listings */

.pagenav {}               /* outermost list item */
.page_item {}             /* any page item */
.page-item-{id} {}        /* specific page id */
.current_page_item {}     /* current page */
.current_page_parent {}   /* parent of current page */
.current_page_ancestor {} /* any ancestor of current page */

.pagenav ul,
.pagenav .current_page_item ul,
.pagenav .current_page_ancestor ul,
.pagenav .current_page_ancestor .current_page_item ul,
.pagenav .current_page_ancestor .current_page_ancestor ul,
.pagenav .current_page_ancestor .current_page_ancestor .current_page_item ul,
.pagenav .current_page_ancestor .current_page_ancestor .current_page_ancestor ul {}

.pagenav  ul ul,
.pagenav .current_page_item ul ul,
.pagenav .current_page_ancestor ul ul,
.pagenav .current_page_ancestor .current_page_item ul ul,
.pagenav .current_page_ancestor .current_page_ancestor ul ul {}
.pagenav .current_page_ancestor .current_page_ancestor .current_page_item ul ul, 
.pagenav .current_page_ancestor .current_page_ancestor .current_page_ancestor ul ul {}

/* WP CSS - Default WordPress Widgets */

.widget {}

/* links widget */
.widget_links {}
.widget_links ul {}
.widget_links ul li {}
.widget_links ul li a {}

/* meta widget */
.widget_meta {}
.widget_meta ul {}
.widget_meta ul li {}
.widget_meta ul li a {}

/* pages widget */
.widget_pages {}
.widget_pages ul {}
.widget_pages ul li {}
.widget_pages ul li a {}

/* recent-posts widget */
.widget_recent_entries {}
.widget_recent_entries ul {}
.widget_recent_entries ul li {}
.widget_recent_entries ul li a {}

/* archives widget */
.widget_archive {}
.widget_archive ul {}
.widget_archive ul li {} 
.widget_archive ul li a {}
.widget_archive select {}
.widget_archive option {}

/* tag-cloud widget */
.widget_links {}
.widget_links li:after {}
.widget_links li:before {}
.widget_tag_cloud {}
.widget_tag_cloud a {}
.widget_tag_cloud a:after {}
.widget_tag_cloud a:before {}

/* calendar widget */
.widget_calendar {}
#calendar_wrap {}
#calendar_wrap th {}
#calendar_wrap td {}
#wp-calendar tr td {}
#wp-calendar caption {}
#wp-calendar a {}
#wp-calendar #today {}
#wp-calendar #prev {}
#wp-calendar #next {}
#wp-calendar #next a {}
#wp-calendar #prev a {}

/* category widget */
.widget_categories {}
.widget_categories ul {}
.widget_categories ul li {} 
.widget_categories ul ul.children {}
.widget_categories a {}
.widget_categories select{}
.widget_categories select#cat {}
.widget_categories select.postform {}
.widget_categories option {}
.widget_categories .level-0 {}
.widget_categories .level-1 {}
.widget_categories .level-2 {}
.widget_categories .level-3 {}

/* recent-comments widget */
.recentcomments {}
#recentcomments {}
#recentcomments li {}
#recentcomments li a {}
.widget_recent_comments {}

/* search widget */
#searchform {}
.widget_search {}
.screen-reader-text {}

/* text widget */
.textwidget {}
.widget_text {}
.textwidget p {}

/* WP CSS - Comment Styles */

.commentlist .reply {}
.commentlist .reply a {}

.commentlist .alt {}
.commentlist .odd {}
.commentlist .even {}
.commentlist .thread-alt {}
.commentlist .thread-odd {}
.commentlist .thread-even {}
.commentlist li ul.children .alt {}
.commentlist li ul.children .odd {}
.commentlist li ul.children .even {}

.commentlist .vcard {}
.commentlist .vcard cite.fn {}
.commentlist .vcard span.says {}
.commentlist .vcard img.photo {}
.commentlist .vcard img.avatar {}
.commentlist .vcard cite.fn a.url {}

.commentlist .comment-meta {} 
.commentlist .comment-meta a {}
.commentlist .commentmetadata {}
.commentlist .commentmetadata a {}

.commentlist .parent {}
.commentlist .comment {}
.commentlist .children {}
.commentlist .pingback {}
.commentlist .bypostauthor {}
.commentlist .comment-author {}
.commentlist .comment-author-admin {}

.commentlist {}
.commentlist li {}
.commentlist li p {}
.commentlist li ul {}
.commentlist li ul.children li {}
.commentlist li ul.children li.alt {}
.commentlist li ul.children li.byuser {}
.commentlist li ul.children li.comment {}
.commentlist li ul.children li.depth-{id} {}
.commentlist li ul.children li.bypostauthor {}
.commentlist li ul.children li.comment-author-admin {}

#cancel-comment-reply {}
#cancel-comment-reply a {}

/* WP CSS - body_class() */

.rtl {}
.home {}
.blog {}
.archive {}
.date {}
.search {}
.paged {}
.attachment {}
.error404 {}
.single postid-(id) {}
.attachmentid-(id) {}
.attachment-(mime-type) {}
.author {}
.author-(user_nicename) {}
.category {}
.category-(slug) {}
.tag {}
.tag-(slug) {}
.page-parent {}
.page-child parent-pageid-(id) {}
.page-template page-template-(template file name) {}
.search-results {}
.search-no-results {}
.logged-in {}
.paged-(page number) {}
.single-paged-(page number) {}
.page-paged-(page number) {}
.category-paged-(page number) {}
.tag-paged-(page number) {}
.date-paged-(page number) {}
.author-paged-(page number) {}
.search-paged-(page number) {}

/* WP CSS - post_class() */

.post-id {}
.post {}
.page {}
.attachment {}
.sticky {}
.hentry {}
.category-misc {}
.category-example {}
.tag-news {}
.tag-wordpress {}
.tag-markup {}

WordPress后端确实生成了“body”类。我从未在任何地方看到过这些明确的文档（尽管我很可能会错过它）。您可以在admin-header.php 来源

生成的类与前端类非常相似：

<body class="wp-admin no-js  upload-php admin-bar branch-3-3 version-3-3-1 admin-color-fresh">

我问这个问题是因为我正在使用add_menu_page(). 你想把你的内容放在

<div class = "wrap">Your content.</div>

class AdminScreen{

    public function __construct(){
        add_action( \'admin_menu\', array( $this, \'doAddMenuPage\' ) );
    }

    public function doAddMenuPage(){
        add_menu_page( "AdminScreen", "AdminScreen", \'edit_others_pages\', \'AdminScreen\', array($this, \'echoAdminPage\') );
    }

    public function echoAdminPage(){        
        //Prints out the HTML into the output buffer:
        echo \'<div class = "wrap"><h1 class = "wp-heading-inline">This looks good, finally!</h1></div>\';
    }
}

还有一个有趣的article 这就很好地列出了所有可用的css类/html标记，可以用来设置管理页面的样式。这些文章有点过时，因为它显示了旧版本WordPress的样式结果，所以很可能后来添加了其他类。

另一个有用的资源是WordPressdashicons.

然而，我不得不祝贺@bueltge 在他的出色表现上plugin 下面列出了在保持管理风格的最新参考方面做得很好的方法。