diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf
diff --git a/.github/workflows/spellcheck.yml b/.github/workflows/spellcheck.yml
index c96c417..54c917f 100644
--- a/.github/workflows/spellcheck.yml
+++ b/.github/workflows/spellcheck.yml
@@ -1,4 +1,4 @@
-name: 'Check spelling'
+name: "Check spelling"
 on:
   push:
     branches: [main]
diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..11acd25
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1,2 @@
+lockfile-version = 3
+registry = 'https://registry.npmjs.org/'
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..2bd5a0a
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+22
diff --git a/.prettierignore b/.prettierignore
index 3145967..cb13d44 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,2 +1,3 @@
 *.html
 *.min.*
+*.js
diff --git a/CNAME b/CNAME
deleted file mode 100644
index 8eebf36..0000000
--- a/CNAME
+++ /dev/null
@@ -1 +0,0 @@
-htmlhint.com
\ No newline at end of file
diff --git a/docs/css/index.css b/docs/css/index.css
index 696dfa6..377f043 100644
--- a/docs/css/index.css
+++ b/docs/css/index.css
@@ -12,52 +12,52 @@ body {
   margin: 20px 0;
 }
 
-.muted span{
+.muted span {
   font-size: 12px;
 }
 
-#editor-title{
-    padding:20px 0;
+#editor-title {
+  padding: 20px 0;
 }
 
-#editor-toolbar{
-    float:right;
+#editor-toolbar {
+  float: right;
 }
 
-#editor{
-    border:1px solid #ccc;
-    border-radius: 4px;
-    height:300px;
+#editor {
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  height: 300px;
 }
 
-#stat-bar{
-    padding:10px 0;
+#stat-bar {
+  padding: 10px 0;
 }
 
-#button-area{
-    float:right;
-    padding:0 10px;
-    display:none;
+#button-area {
+  float: right;
+  padding: 0 10px;
+  display: none;
 }
 
-.footer{
-    text-align:center;
+.footer {
+  text-align: center;
 }
 
-#options{
-    padding:20px;
+#options {
+  padding: 20px;
 }
 
-#options h3{
-    font-size: 18px;
+#options h3 {
+  font-size: 18px;
 }
 
-#options ul{
-    list-style: none;
-    margin: 0;
+#options ul {
+  list-style: none;
+  margin: 0;
 }
 
-#options li div{
-    display:none;
-    padding-left:20px;
-}
\ No newline at end of file
+#options li div {
+  display: none;
+  padding-left: 20px;
+}
diff --git a/docs/index.html b/docs/index.html
index e6abf57..f957bba 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -6,9 +6,11 @@
     <title>HTMLHint - The Static Code Analysis Tool you need for your HTML</title>
     <meta name="description" content="HTMLHint - The Static Code Analysis Tool you need for your HTML">
     <link rel="icon" href="favicon.ico" type="image/x-icon">
+    <meta name="color-scheme" content="light"/>
     <link href="css/bootstrap.min.css" rel="stylesheet">
     <link href="css/index.css" rel="stylesheet">
     <link rel="canonical" href="https://playground.htmlhint.com/">
+    <meta name="fediverse:creator" content="@htmlhint@mastodon.social">
     <script defer data-domain="playground.htmlhint.com" src="https://plausible.io/js/script.hash.outbound-links.pageview-props.tagged-events.js"></script>
     <script>window.plausible = window.plausible || function() { (window.plausible.q = window.plausible.q || []).push(arguments) }</script>
   </head>
@@ -159,7 +161,7 @@ <h3>Other</h3>
         </div>
       </main>
         <hr>
-        <footer>
+        <footer class="small text-center opacity-75">
             <p>&copy; HTMLHint.com 2014-2021</p>
         </footer>
     </div>
diff --git a/docs/js/htmlhint.min.js b/docs/js/htmlhint.min.js
new file mode 100644
index 0000000..0b0ad2c
--- /dev/null
+++ b/docs/js/htmlhint.min.js
@@ -0,0 +1,8 @@
+/*!
+ * HTMLHint v0.9.13
+ * https://github.com/yaniswang/HTMLHint
+ *
+ * (c) 2014-2016 Yanis Wang <yanis.wang@gmail.com>.
+ * MIT Licensed
+ */
+var HTMLHint=function(e){function t(e,t){return Array(e+1).join(t||" ")}var a={};return a.version="0.9.13",a.release="20160501",a.rules={},a.defaultRuleset={"tagname-lowercase":!0,"attr-lowercase":!0,"attr-value-double-quotes":!0,"doctype-first":!0,"tag-pair":!0,"spec-char-escape":!0,"id-unique":!0,"src-not-empty":!0,"attr-no-duplication":!0,"title-require":!0},a.addRule=function(e){a.rules[e.id]=e},a.verify=function(t,n){(n===e||0===Object.keys(n).length)&&(n=a.defaultRuleset),t=t.replace(/^\s*<!--\s*htmlhint\s+([^\r\n]+?)\s*-->/i,function(t,a){return n===e&&(n={}),a.replace(/(?:^|,)\s*([^:,]+)\s*(?:\:\s*([^,\s]+))?/g,function(t,a,r){"false"===r?r=!1:"true"===r&&(r=!0),n[a]=r===e?!0:r}),""});var r,i=new HTMLParser,s=new a.Reporter(t,n),o=a.rules;for(var l in n)r=o[l],r!==e&&n[l]!==!1&&r.init(i,s,n[l]);return i.parse(t),s.messages},a.format=function(e,a){a=a||{};var n=[],r={white:"",grey:"",red:"",reset:""};a.colors&&(r.white="",r.grey="",r.red="",r.reset="");var i=a.indent||0;return e.forEach(function(e){var a=40,s=a+20,o=e.evidence,l=e.line,u=e.col,d=o.length,c=u>a+1?u-a:1,f=o.length>u+s?u+s:d;a+1>u&&(f+=a-u+1),o=o.replace(/\t/g," ").substring(c-1,f),c>1&&(o="..."+o,c-=3),d>f&&(o+="..."),n.push(r.white+t(i)+"L"+l+" |"+r.grey+o+r.reset);var g=u-c,h=o.substring(0,g).match(/[^\u0000-\u00ff]/g);null!==h&&(g+=h.length),n.push(r.white+t(i)+t((l+"").length+3+g)+"^ "+r.red+e.message+" ("+e.rule.id+")"+r.reset)}),n},a}();"object"==typeof exports&&exports&&(exports.HTMLHint=HTMLHint),function(e){var t=function(){var e=this;e._init.apply(e,arguments)};t.prototype={_init:function(e,t){var a=this;a.html=e,a.lines=e.split(/\r?\n/);var n=e.match(/\r?\n/);a.brLen=null!==n?n[0].length:0,a.ruleset=t,a.messages=[]},error:function(e,t,a,n,r){this.report("error",e,t,a,n,r)},warn:function(e,t,a,n,r){this.report("warning",e,t,a,n,r)},info:function(e,t,a,n,r){this.report("info",e,t,a,n,r)},report:function(e,t,a,n,r,i){for(var s,o,l=this,u=l.lines,d=l.brLen,c=a-1,f=u.length;f>c&&(s=u[c],o=s.length,n>o&&f>a);c++)a++,n-=o,1!==n&&(n-=d);l.messages.push({type:e,message:t,raw:i,evidence:s,line:a,col:n,rule:{id:r.id,description:r.description,link:"https://github.com/yaniswang/HTMLHint/wiki/"+r.id}})}},e.Reporter=t}(HTMLHint);var HTMLParser=function(e){var t=function(){var e=this;e._init.apply(e,arguments)};return t.prototype={_init:function(){var e=this;e._listeners={},e._mapCdataTags=e.makeMap("script,style"),e._arrBlocks=[],e.lastEvent=null},makeMap:function(e){for(var t={},a=e.split(","),n=0;a.length>n;n++)t[a[n]]=!0;return t},parse:function(t){function a(t,a,n,r){var i=n-b+1;r===e&&(r={}),r.raw=a,r.pos=n,r.line=w,r.col=i,L.push(r),c.fire(t,r);for(var s;s=m.exec(a);)w++,b=n+m.lastIndex}var n,r,i,s,o,l,u,d,c=this,f=c._mapCdataTags,g=/<(?:\/([^\s>]+)\s*|!--([\s\S]*?)--|!([^>]*?)|([\w\-:]+)((?:\s+[^\s"'>\/=\x00-\x0F\x7F\x80-\x9F]+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^\s"'>]*))?)*?)\s*(\/?))>/g,h=/\s*([^\s"'>\/=\x00-\x0F\x7F\x80-\x9F]+)(?:\s*=\s*(?:(")([^"]*)"|(')([^']*)'|([^\s"'>]*)))?/g,m=/\r?\n/g,p=0,v=0,b=0,w=1,L=c._arrBlocks;for(c.fire("start",{pos:0,line:1,col:1});n=g.exec(t);)if(r=n.index,r>p&&(d=t.substring(p,r),o?u.push(d):a("text",d,p)),p=g.lastIndex,!(i=n[1])||(o&&i===o&&(d=u.join(""),a("cdata",d,v,{tagName:o,attrs:l}),o=null,l=null,u=null),o))if(o)u.push(n[0]);else if(i=n[4]){s=[];for(var y,T=n[5],H=0;y=h.exec(T);){var x=y[1],M=y[2]?y[2]:y[4]?y[4]:"",N=y[3]?y[3]:y[5]?y[5]:y[6]?y[6]:"";s.push({name:x,value:N,quote:M,index:y.index,raw:y[0]}),H+=y[0].length}H===T.length?(a("tagstart",n[0],r,{tagName:i,attrs:s,close:n[6]}),f[i]&&(o=i,l=s.concat(),u=[],v=p)):a("text",n[0],r)}else(n[2]||n[3])&&a("comment",n[0],r,{content:n[2]||n[3],"long":n[2]?!0:!1});else a("tagend",n[0],r,{tagName:i});t.length>p&&(d=t.substring(p,t.length),a("text",d,p)),c.fire("end",{pos:p,line:w,col:t.length-b+1})},addListener:function(t,a){for(var n,r=this._listeners,i=t.split(/[,\s]/),s=0,o=i.length;o>s;s++)n=i[s],r[n]===e&&(r[n]=[]),r[n].push(a)},fire:function(t,a){a===e&&(a={}),a.type=t;var n=this,r=[],i=n._listeners[t],s=n._listeners.all;i!==e&&(r=r.concat(i)),s!==e&&(r=r.concat(s));var o=n.lastEvent;null!==o&&(delete o.lastEvent,a.lastEvent=o),n.lastEvent=a;for(var l=0,u=r.length;u>l;l++)r[l].call(n,a)},removeListener:function(t,a){var n=this._listeners[t];if(n!==e)for(var r=0,i=n.length;i>r;r++)if(n[r]===a){n.splice(r,1);break}},fixPos:function(e,t){var a,n=e.raw.substr(0,t),r=n.split(/\r?\n/),i=r.length-1,s=e.line;return i>0?(s+=i,a=r[i].length+1):a=e.col+t,{line:s,col:a}},getMapAttrs:function(e){for(var t,a={},n=0,r=e.length;r>n;n++)t=e[n],a[t.name]=t.value;return a}},t}();"object"==typeof exports&&exports&&(exports.HTMLParser=HTMLParser),HTMLHint.addRule({id:"alt-require",description:"The alt attribute of an <img> element must be present and alt attribute of area[href] and input[type=image] must have a value.",init:function(e,t){var a=this;e.addListener("tagstart",function(n){var r,i=n.tagName.toLowerCase(),s=e.getMapAttrs(n.attrs),o=n.col+i.length+1;"img"!==i||"alt"in s?("area"===i&&"href"in s||"input"===i&&"image"===s.type)&&("alt"in s&&""!==s.alt||(r="area"===i?"area[href]":"input[type=image]",t.warn("The alt attribute of "+r+" must have a value.",n.line,o,a,n.raw))):t.warn("An alt attribute must be present on <img> elements.",n.line,o,a,n.raw)})}}),HTMLHint.addRule({id:"attr-lowercase",description:"All attribute names must be in lowercase.",init:function(e,t,a){var n=this,r=Array.isArray(a)?a:[];e.addListener("tagstart",function(e){for(var a,i=e.attrs,s=e.col+e.tagName.length+1,o=0,l=i.length;l>o;o++){a=i[o];var u=a.name;-1===r.indexOf(u)&&u!==u.toLowerCase()&&t.error("The attribute name of [ "+u+" ] must be in lowercase.",e.line,s+a.index,n,a.raw)}})}}),HTMLHint.addRule({id:"attr-no-duplication",description:"Elements cannot have duplicate attributes.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r,i=e.attrs,s=e.col+e.tagName.length+1,o={},l=0,u=i.length;u>l;l++)n=i[l],r=n.name,o[r]===!0&&t.error("Duplicate of attribute name [ "+n.name+" ] was found.",e.line,s+n.index,a,n.raw),o[r]=!0})}}),HTMLHint.addRule({id:"attr-unsafe-chars",description:"Attribute values cannot contain unsafe chars.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r,i=e.attrs,s=e.col+e.tagName.length+1,o=/[\u0000-\u0008\u000b\u000c\u000e-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/,l=0,u=i.length;u>l;l++)if(n=i[l],r=n.value.match(o),null!==r){var d=escape(r[0]).replace(/%u/,"\\u").replace(/%/,"\\x");t.warn("The value of attribute [ "+n.name+" ] cannot contain an unsafe char [ "+d+" ].",e.line,s+n.index,a,n.raw)}})}}),HTMLHint.addRule({id:"attr-value-double-quotes",description:"Attribute values must be in double quotes.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r=e.attrs,i=e.col+e.tagName.length+1,s=0,o=r.length;o>s;s++)n=r[s],(""!==n.value&&'"'!==n.quote||""===n.value&&"'"===n.quote)&&t.error("The value of attribute [ "+n.name+" ] must be in double quotes.",e.line,i+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"attr-value-not-empty",description:"All attributes must have values.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r=e.attrs,i=e.col+e.tagName.length+1,s=0,o=r.length;o>s;s++)n=r[s],""===n.quote&&""===n.value&&t.warn("The attribute [ "+n.name+" ] must have a value.",e.line,i+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"csslint",description:"Scan css with csslint.",init:function(e,t,a){var n=this;e.addListener("cdata",function(e){if("style"===e.tagName.toLowerCase()){var r;if(r="object"==typeof exports&&require?require("csslint").CSSLint.verify:CSSLint.verify,void 0!==a){var i=e.line-1,s=e.col-1;try{var o=r(e.raw,a).messages;o.forEach(function(e){var a=e.line;t["warning"===e.type?"warn":"error"]("["+e.rule.id+"] "+e.message,i+a,(1===a?s:0)+e.col,n,e.evidence)})}catch(l){}}}})}}),HTMLHint.addRule({id:"doctype-first",description:"Doctype must be declared first.",init:function(e,t){var a=this,n=function(r){"start"===r.type||"text"===r.type&&/^\s*$/.test(r.raw)||(("comment"!==r.type&&r.long===!1||/^DOCTYPE\s+/i.test(r.content)===!1)&&t.error("Doctype must be declared first.",r.line,r.col,a,r.raw),e.removeListener("all",n))};e.addListener("all",n)}}),HTMLHint.addRule({id:"doctype-html5",description:'Invalid doctype. Use: "<!DOCTYPE html>"',init:function(e,t){function a(e){e.long===!1&&"doctype html"!==e.content.toLowerCase()&&t.warn('Invalid doctype. Use: "<!DOCTYPE html>"',e.line,e.col,r,e.raw)}function n(){e.removeListener("comment",a),e.removeListener("tagstart",n)}var r=this;e.addListener("all",a),e.addListener("tagstart",n)}}),HTMLHint.addRule({id:"head-script-disabled",description:"The <script> tag cannot be used in a <head> tag.",init:function(e,t){function a(a){var n=e.getMapAttrs(a.attrs),o=n.type,l=a.tagName.toLowerCase();"head"===l&&(s=!0),s!==!0||"script"!==l||o&&i.test(o)!==!0||t.warn("The <script> tag cannot be used in a <head> tag.",a.line,a.col,r,a.raw)}function n(t){"head"===t.tagName.toLowerCase()&&(e.removeListener("tagstart",a),e.removeListener("tagend",n))}var r=this,i=/^(text\/javascript|application\/javascript)$/i,s=!1;e.addListener("tagstart",a),e.addListener("tagend",n)}}),HTMLHint.addRule({id:"href-abs-or-rel",description:"An href attribute must be either absolute or relative.",init:function(e,t,a){var n=this,r="abs"===a?"absolute":"relative";e.addListener("tagstart",function(e){for(var a,i=e.attrs,s=e.col+e.tagName.length+1,o=0,l=i.length;l>o;o++)if(a=i[o],"href"===a.name){("absolute"===r&&/^\w+?:/.test(a.value)===!1||"relative"===r&&/^https?:\/\//.test(a.value)===!0)&&t.warn("The value of the href attribute [ "+a.value+" ] must be "+r+".",e.line,s+a.index,n,a.raw);break}})}}),HTMLHint.addRule({id:"id-class-ad-disabled",description:"The id and class attributes cannot use the ad keyword, it will be blocked by adblock software.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r,i=e.attrs,s=e.col+e.tagName.length+1,o=0,l=i.length;l>o;o++)n=i[o],r=n.name,/^(id|class)$/i.test(r)&&/(^|[-\_])ad([-\_]|$)/i.test(n.value)&&t.warn("The value of attribute "+r+" cannot use the ad keyword.",e.line,s+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"id-class-value",description:"The id and class attribute values must meet the specified rules.",init:function(e,t,a){var n,r=this,i={underline:{regId:/^[a-z\d]+(_[a-z\d]+)*$/,message:"The id and class attribute values must be in lowercase and split by an underscore."},dash:{regId:/^[a-z\d]+(-[a-z\d]+)*$/,message:"The id and class attribute values must be in lowercase and split by a dash."},hump:{regId:/^[a-z][a-zA-Z\d]*([A-Z][a-zA-Z\d]*)*$/,message:"The id and class attribute values must meet the camelCase style."}};if(n="string"==typeof a?i[a]:a,n&&n.regId){var s=n.regId,o=n.message;e.addListener("tagstart",function(e){for(var a,n=e.attrs,i=e.col+e.tagName.length+1,l=0,u=n.length;u>l;l++)if(a=n[l],"id"===a.name.toLowerCase()&&s.test(a.value)===!1&&t.warn(o,e.line,i+a.index,r,a.raw),"class"===a.name.toLowerCase())for(var d,c=a.value.split(/\s+/g),f=0,g=c.length;g>f;f++)d=c[f],d&&s.test(d)===!1&&t.warn(o,e.line,i+a.index,r,d)})}}}),HTMLHint.addRule({id:"id-unique",description:"The value of id attributes must be unique.",init:function(e,t){var a=this,n={};e.addListener("tagstart",function(e){for(var r,i,s=e.attrs,o=e.col+e.tagName.length+1,l=0,u=s.length;u>l;l++)if(r=s[l],"id"===r.name.toLowerCase()){i=r.value,i&&(void 0===n[i]?n[i]=1:n[i]++,n[i]>1&&t.error("The id value [ "+i+" ] must be unique.",e.line,o+r.index,a,r.raw));break}})}}),HTMLHint.addRule({id:"inline-script-disabled",description:"Inline script cannot be use.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r,i=e.attrs,s=e.col+e.tagName.length+1,o=/^on(unload|message|submit|select|scroll|resize|mouseover|mouseout|mousemove|mouseleave|mouseenter|mousedown|load|keyup|keypress|keydown|focus|dblclick|click|change|blur|error)$/i,l=0,u=i.length;u>l;l++)n=i[l],r=n.name.toLowerCase(),o.test(r)===!0?t.warn("Inline script [ "+n.raw+" ] cannot be use.",e.line,s+n.index,a,n.raw):("src"===r||"href"===r)&&/^\s*javascript:/i.test(n.value)&&t.warn("Inline script [ "+n.raw+" ] cannot be use.",e.line,s+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"inline-style-disabled",description:"Inline style cannot be use.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r=e.attrs,i=e.col+e.tagName.length+1,s=0,o=r.length;o>s;s++)n=r[s],"style"===n.name.toLowerCase()&&t.warn("Inline style [ "+n.raw+" ] cannot be use.",e.line,i+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"jshint",description:"Scan script with jshint.",init:function(e,t,a){var n=this;e.addListener("cdata",function(r){if("script"===r.tagName.toLowerCase()){var i=e.getMapAttrs(r.attrs),s=i.type;if(void 0!==i.src||s&&/^(text\/javascript)$/i.test(s)===!1)return;var o;if(o="object"==typeof exports&&require?require("jshint").JSHINT:JSHINT,void 0!==a){var l=r.line-1,u=r.col-1,d=r.raw.replace(/\t/g," ");try{var c=o(d,a);c===!1&&o.errors.forEach(function(e){var a=e.line;t.warn(e.reason,l+a,(1===a?u:0)+e.character,n,e.evidence)})}catch(f){}}}})}}),HTMLHint.addRule({id:"space-tab-mixed-disabled",description:"Do not mix tabs and spaces for indentation.",init:function(e,t,a){var n=this,r="nomix",i=null;if("string"==typeof a){var s=a.match(/^([a-z]+)(\d+)?/);r=s[1],i=s[2]&&parseInt(s[2],10)}e.addListener("text",function(a){for(var s,o=a.raw,l=/(^|\r?\n)([ \t]+)/g;s=l.exec(o);){var u=e.fixPos(a,s.index+s[1].length);if(1===u.col){var d=s[2];"space"===r?i?(/^ +$/.test(d)===!1||0!==d.length%i)&&t.warn("Please use space for indentation and keep "+i+" length.",u.line,1,n,a.raw):/^ +$/.test(d)===!1&&t.warn("Please use space for indentation.",u.line,1,n,a.raw):"tab"===r&&/^\t+$/.test(d)===!1?t.warn("Please use tab for indentation.",u.line,1,n,a.raw):/ +\t|\t+ /.test(d)===!0&&t.warn("Do not mix tabs and spaces for indentation.",u.line,1,n,a.raw)}}})}}),HTMLHint.addRule({id:"spec-char-escape",description:"Special characters must be escaped.",init:function(e,t){var a=this;e.addListener("text",function(n){for(var r,i=n.raw,s=/[<>]/g;r=s.exec(i);){var o=e.fixPos(n,r.index);t.error("Special characters must be escaped : [ "+r[0]+" ].",o.line,o.col,a,n.raw)}})}}),HTMLHint.addRule({id:"src-not-empty",description:"The src attribute of an img(script,link) must have a value.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){for(var n,r=e.tagName,i=e.attrs,s=e.col+r.length+1,o=0,l=i.length;l>o;o++)n=i[o],(/^(img|script|embed|bgsound|iframe)$/.test(r)===!0&&"src"===n.name||"link"===r&&"href"===n.name||"object"===r&&"data"===n.name)&&""===n.value&&t.error("The attribute [ "+n.name+" ] of the tag [ "+r+" ] must have a value.",e.line,s+n.index,a,n.raw)})}}),HTMLHint.addRule({id:"style-disabled",description:"<style> tags cannot be used.",init:function(e,t){var a=this;e.addListener("tagstart",function(e){"style"===e.tagName.toLowerCase()&&t.warn("The <style> tag cannot be used.",e.line,e.col,a,e.raw)})}}),HTMLHint.addRule({id:"tag-pair",description:"Tag must be paired.",init:function(e,t){var a=this,n=[],r=e.makeMap("area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed,track,command,source,keygen,wbr");e.addListener("tagstart",function(e){var t=e.tagName.toLowerCase();void 0!==r[t]||e.close||n.push({tagName:t,line:e.line,raw:e.raw})}),e.addListener("tagend",function(e){for(var r=e.tagName.toLowerCase(),i=n.length-1;i>=0&&n[i].tagName!==r;i--);if(i>=0){for(var s=[],o=n.length-1;o>i;o--)s.push("</"+n[o].tagName+">");if(s.length>0){var l=n[n.length-1];t.error("Tag must be paired, missing: [ "+s.join("")+" ], start tag match failed [ "+l.raw+" ] on line "+l.line+".",e.line,e.col,a,e.raw)}n.length=i}else t.error("Tag must be paired, no start tag: [ "+e.raw+" ]",e.line,e.col,a,e.raw)}),e.addListener("end",function(e){for(var r=[],i=n.length-1;i>=0;i--)r.push("</"+n[i].tagName+">");if(r.length>0){var s=n[n.length-1];t.error("Tag must be paired, missing: [ "+r.join("")+" ], open tag match failed [ "+s.raw+" ] on line "+s.line+".",e.line,e.col,a,"")}})}}),HTMLHint.addRule({id:"tag-self-close",description:"Empty tags must be self closed.",init:function(e,t){var a=this,n=e.makeMap("area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed,track,command,source,keygen,wbr");e.addListener("tagstart",function(e){var r=e.tagName.toLowerCase();void 0!==n[r]&&(e.close||t.warn("The empty tag : [ "+r+" ] must be self closed.",e.line,e.col,a,e.raw))})}}),HTMLHint.addRule({id:"tagname-lowercase",description:"All html element names must be in lowercase.",init:function(e,t){var a=this;e.addListener("tagstart,tagend",function(e){var n=e.tagName;n!==n.toLowerCase()&&t.error("The html element name of [ "+n+" ] must be in lowercase.",e.line,e.col,a,e.raw)})}}),HTMLHint.addRule({id:"title-require",description:"<title> must be present in <head> tag.",init:function(e,t){function a(e){var t=e.tagName.toLowerCase();"head"===t?i=!0:"title"===t&&i&&(s=!0)}function n(i){var o=i.tagName.toLowerCase();if(s&&"title"===o){var l=i.lastEvent;("text"!==l.type||"text"===l.type&&/^\s*$/.test(l.raw)===!0)&&t.error("<title></title> must not be empty.",i.line,i.col,r,i.raw)}else"head"===o&&(s===!1&&t.error("<title> must be present in <head> tag.",i.line,i.col,r,i.raw),e.removeListener("tagstart",a),e.removeListener("tagend",n))}var r=this,i=!1,s=!1;e.addListener("tagstart",a),e.addListener("tagend",n)}});
\ No newline at end of file
diff --git a/package.json b/package.json
index f1f4251..f49fc1d 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "htmlhint-playground",
   "version": "1.0.0",
   "private": true,
-  "description": "",
+  "description": "HTMLHint Playground",
   "homepage": "https://htmlhint-playground.netlify.app/",
   "bugs": {
     "url": "https://github.com/htmlhint/htmlhint-playground/issues"
@@ -11,17 +11,22 @@
     "type": "git",
     "url": "https://github.com/htmlhint/htmlhint-playground.git"
   },
+  "funding": {
+    "type": "Open Collective",
+    "url": "https://opencollective.com/htmlhint"
+  },
   "license": "MIT",
   "author": "HTMLHint",
   "scripts": {
     "htmlhint": "npx htmlhint .",
     "pa11y-ci": "npx pa11y-ci https://htmlhint-playground.netlify.app/",
+    "prettier": "npx prettier --write .",
     "serve": "npx http-server -o docs/index.html -p 8080 -c-1"
   },
   "engines": {
-    "node": ">=20"
+    "node": ">=22.16.0"
   },
   "volta": {
-    "node": "20.19.1"
+    "node": "22.16.0"
   }
 }