resolves #4140 remove duplicate selectors in default stylesheet; enable stylelint rule to check for them

1 files changed, 14 insertions, 29 deletions

diff --git a/data/stylesheets/asciidoctor-default.css b/data/stylesheets/asciidoctor-default.css
index f419d383..b5a38a44 100644
--- a/data/stylesheets/asciidoctor-default.css
+++ b/data/stylesheets/asciidoctor-default.css
@@ -2,24 +2,19 @@
 /* Uncomment the following line when using as a custom stylesheet */
 /* @import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"; */
 html{font-family:sans-serif;-webkit-text-size-adjust:100%}
-a{background:none}
 a:focus{outline:thin dotted}
 a:active,a:hover{outline:0}
-h1{font-size:2em;margin:.67em 0}
-b,strong{font-weight:bold}
 abbr{font-size:.9em}
 abbr[title]{cursor:help;border-bottom:1px dotted #dddddf;text-decoration:none}
 dfn{font-style:italic}
-hr{height:0}
 mark{background:#ff0;color:#000}
 code,kbd,pre,samp{font-family:monospace;font-size:1em}
-pre{white-space:pre-wrap}
 q{quotes:"\201C" "\201D" "\2018" "\2019"}
-small{font-size:80%}
+small{font-size:60%;line-height:inherit}
 sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
 sup{top:-.5em}
 sub{bottom:-.25em}
-img{border:0}
+img{-ms-interpolation-mode:bicubic;border:0}
 svg:not(:root){overflow:hidden}
 figure{margin:0}
 audio,video{display:inline-block}
@@ -33,15 +28,13 @@ button,html input[type=button],input[type=reset],input[type=submit]{-webkit-appe
 button[disabled],html input[disabled]{cursor:default}
 input[type=checkbox],input[type=radio]{padding:0}
 button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
-textarea{overflow:auto;vertical-align:top}
-table{border-collapse:collapse;border-spacing:0}
+textarea{height:auto;min-height:50px;overflow:auto;vertical-align:top}
 *,::before,::after{box-sizing:border-box}
 html,body{font-size:100%}
 body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;line-height:1;position:relative;cursor:auto;-moz-tab-size:4;-o-tab-size:4;tab-size:4;word-wrap:anywhere;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
 a:hover{cursor:pointer}
 img,object,embed{max-width:100%;height:auto}
 object,embed{height:100%}
-img{-ms-interpolation-mode:bicubic}
 .left{float:left!important}
 .right{float:right!important}
 .text-left{text-align:left!important}
@@ -50,26 +43,24 @@ img{-ms-interpolation-mode:bicubic}
 .text-justify{text-align:justify!important}
 .hide{display:none}
 img,object,svg{display:inline-block;vertical-align:middle}
-textarea{height:auto;min-height:50px}
 select{width:100%}
 .subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
 div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0}
-a{color:#2156a5;text-decoration:underline;line-height:inherit}
+a{background:none;color:#2156a5;text-decoration:underline;line-height:inherit}
 a:hover,a:focus{color:#1d4b8f}
 a img{border:0}
-p{line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
+p{line-height:1.6;margin-bottom:1.25rem;text-rendering:optimizeLegibility}
 p aside{font-size:.875em;line-height:1.35;font-style:italic}
-h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
-h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
+h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.2;word-spacing:-.05em}
+h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{color:#e99b8f;line-height:0}
 h1{font-size:2.125em}
 h2{font-size:1.6875em}
 h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
 h4,h5{font-size:1.125em}
 h6{font-size:1em}
-hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em}
+hr{border:solid #dddddf;border-width:1px 0 0;clear:both;height:0;margin:1.25em 0 1.1875em}
 em,i{font-style:italic;line-height:inherit}
 strong,b{font-weight:bold;line-height:inherit}
-small{font-size:60%;line-height:inherit}
 code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
 ul,ol,dl{line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
 ul,ol{margin-left:1.5em}
@@ -80,21 +71,18 @@ ul.circle{list-style-type:circle}
 ul.disc{list-style-type:disc}
 ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
 dl dt{margin-bottom:.3125em;font-weight:bold}
-dl dd{margin-bottom:1.25em}
 blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
 blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
-@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
-h1{font-size:2.75em}
+@media screen and (min-width:768px){h1{font-size:2.75em}
 h2{font-size:2.3125em}
 h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
 h4{font-size:1.4375em}}
-table{background:#fff;margin-bottom:1.25em;border:1px solid #dedede;word-wrap:normal}
+table{background:#fff;border:1px solid #dedede;border-collapse:collapse;border-spacing:0;margin-bottom:1.25em;word-wrap:normal}
 table thead,table tfoot{background:#f7f8f7}
 table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
 table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
 table tr.even,table tr.alt{background:#f8f8f7}
 table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{line-height:1.6}
-h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
 h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
 .center{margin-left:auto;margin-right:auto}
 .stretch{width:100%}
@@ -104,7 +92,7 @@ h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title str
 :not(pre).nowrap{white-space:nowrap}
 :not(pre).pre-wrap{white-space:pre-wrap}
 :not(pre):not([class^=L])>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background:#f7f7f8;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed}
-pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed}
+pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed;white-space:pre-wrap}
 pre code,pre pre{color:inherit;font-size:inherit;line-height:inherit}
 pre>code{display:block}
 pre.nowrap,pre.nowrap pre{white-space:pre;word-wrap:normal}
@@ -126,7 +114,7 @@ p a>code:hover{color:rgba(0,0,0,.9)}
 #header,#content,#footnotes,#footer{width:100%;margin:0 auto;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
 #header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
 #header::after,#content::after,#footnotes::after,#footer::after{clear:both}
-#content{margin-top:1.25em}
+#content{margin-top:1.25em;margin-bottom:.625em}
 #content::before{content:none}
 #header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
 #header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
@@ -170,7 +158,6 @@ body.toc2.toc-right{padding-left:0;padding-right:20em}}
 #content #toc>:last-child{margin-bottom:0}
 #footer{max-width:none;background:rgba(0,0,0,.8);padding:1.25em}
 #footer-text{color:hsla(0,0%,100%,.8);line-height:1.44}
-#content{margin-bottom:.625em}
 .sect1{padding-bottom:.625em}
 @media screen and (min-width:768px){#content{margin-bottom:1.25em}
 .sect1{padding-bottom:1.25em}}
@@ -196,7 +183,7 @@ table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
 .admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
 .admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6);word-wrap:anywhere}
 .admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
-.exampleblock>.content{border:1px solid #e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;border-radius:4px}
+.exampleblock>.content{border:1px solid #e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#fffef7;border-radius:4px;box-shadow:0 1px 4px #e0e0dc}
 .exampleblock>.content>:first-child{margin-top:0}
 .exampleblock>.content>:last-child{margin-bottom:0}
 .sidebarblock{border:1px solid #dbdbd6;margin-bottom:1.25em;padding:1.25em;background:#f3f3f2;border-radius:4px}
@@ -277,7 +264,7 @@ p.tableblock>code:only-child{background:none;padding:0}
 p.tableblock{font-size:1em}
 ol{margin-left:1.75em}
 ul li ol{margin-left:1.5em}
-dl dd{margin-left:1.125em}
+dl dd{margin-left:1.125em;margin-bottom:1.25em}
 dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}
 ol>li p,ul>li p,ul dd,ol dd,.olist .olist,.ulist .ulist,.ulist .olist,.olist .ulist{margin-bottom:.625em}
 ul.checklist,ul.none,ol.none,ul.no-bullet,ol.no-bullet,ol.unnumbered,ul.unstyled,ol.unstyled{list-style-type:none}
@@ -384,9 +371,7 @@ dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
 h1,h2,p,td.content,span.alt,summary{letter-spacing:-.01em}
 p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
 p,blockquote,dt,td.content,span.alt,summary{font-size:1.0625rem}
-p{margin-bottom:1.25rem}
 .sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
-.exampleblock>.content{background:#fffef7;border-color:#e0e0dc;box-shadow:0 1px 4px #e0e0dc}
 .print-only{display:none!important}
 @page{margin:1.25cm .75cm}
 @media print{*{box-shadow:none!important;text-shadow:none!important}