diff --git a/dist/shoelace.css b/dist/shoelace.css
index dba373f70..dbfdf91aa 100644
--- a/dist/shoelace.css
+++ b/dist/shoelace.css
@@ -8,7 +8,7 @@
 
 /*! normalize.css v7.0.0 | MIT License | github.com/necolas/normalize.css */html{line-height:1.15;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}article,aside,footer,header,nav,section{display:block}h1{font-size:2em;margin:.67em 0}figcaption,figure,main{display:block}figure{margin:1em 40px}hr{-webkit-box-sizing:content-box;box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent;-webkit-text-decoration-skip:objects}abbr[title]{border-bottom:none;text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}b,strong{font-weight:inherit;font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}dfn{font-style:italic}mark{background-color:#ff0;color:#000}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}audio,video{display:inline-block}audio:not([controls]){display:none;height:0}img{border-style:none}svg:not(:root){overflow:hidden}button,input,optgroup,select,textarea{font-family:sans-serif;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}[type=reset],[type=submit],button,html [type=button]{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{border-style:none;padding:0}[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring,button:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{-webkit-box-sizing:border-box;box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{display:inline-block;vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{-webkit-box-sizing:border-box;box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-cancel-button,[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details,menu{display:block}summary{display:list-item}canvas{display:inline-block}[hidden],template{display:none}
 
-/*! Content */html{-webkit-box-sizing:border-box;box-sizing:border-box}*,:after,:before{-webkit-box-sizing:inherit;box-sizing:inherit}body{background:#fff;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue;font-weight:400;font-size:1rem;color:#111;line-height:1.5}a{text-decoration:none}a,a:hover{color:#0074d9}a:hover{text-decoration:underline}abbr[title]{text-decoration:none;border-bottom:2px dashed currentcolor}b,strong{font-weight:700}blockquote{font-size:1.25rem;border-left:.4rem solid #ddd;padding:.5rem .5rem .5rem 1rem;margin-bottom:1.5rem;margin-left:0}blockquote :last-child{margin-bottom:0}code{font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;font-size:90%;color:#111;background-color:#f2f2f2;border-radius:.25rem;padding:.2rem .4rem}del{color:#ff4136}figure{margin-top:0;margin-bottom:1.5rem}h1,h2,h3,h4,h5,h6{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue;font-weight:300;line-height:1.1;color:inherit;margin-top:0;margin-bottom:.5rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}hr{border:none;border-top:1px solid #ddd;margin:2rem 0}img{height:auto;max-width:100%;vertical-align:middle}ins{color:#2ecc40}kbd{font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;font-size:90%;color:#fff;background-color:#111;border-radius:.25rem}kbd,mark{padding:.2rem .4rem}mark{color:inherit;background-color:#ffdc00}p,pre{margin-top:0;margin-bottom:1.5rem}pre{max-height:none;overflow-y:auto;font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;color:#111;background-color:#f2f2f2;border-radius:.25rem;padding:1rem}small{font-size:.875rem}dl{margin-bottom:1.5rem}dt{font-weight:700}dd{margin-left:0}dd,ol,ul{margin-bottom:1.5rem}ol,ul{line-height:1.5;margin-top:0}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}::-webkit-input-placeholder{color:#aaa}:-ms-input-placeholder{color:#aaa}::placeholder{color:#aaa}::-moz-selection{background-color:#0074d9;color:#fff;text-shadow:none!important}::selection{background-color:#0074d9;color:#fff;text-shadow:none!important}
+/*! Content */html{-webkit-box-sizing:border-box;box-sizing:border-box}*,:after,:before{-webkit-box-sizing:inherit;box-sizing:inherit}[hidden]{display:none!important}body{background:#fff;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue;font-weight:400;font-size:1rem;color:#111;line-height:1.5}a{text-decoration:none}a,a:hover{color:#0074d9}a:hover{text-decoration:underline}abbr[title]{text-decoration:none;border-bottom:2px dashed currentcolor}b,strong{font-weight:700}blockquote{font-size:1.25rem;border-left:.4rem solid #ddd;padding:.5rem .5rem .5rem 1rem;margin-bottom:1.5rem;margin-left:0}blockquote :last-child{margin-bottom:0}code{font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;font-size:90%;color:#111;background-color:#f2f2f2;border-radius:.25rem;padding:.2rem .4rem}del{color:#ff4136}figure{margin-top:0;margin-bottom:1.5rem}h1,h2,h3,h4,h5,h6{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue;font-weight:300;line-height:1.1;color:inherit;margin-top:0;margin-bottom:.5rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}hr{border:none;border-top:1px solid #ddd;margin:2rem 0}img{height:auto;max-width:100%;vertical-align:middle}ins{color:#2ecc40}kbd{font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;font-size:90%;color:#fff;background-color:#111;border-radius:.25rem}kbd,mark{padding:.2rem .4rem}mark{color:inherit;background-color:#ffdc00}p,pre{margin-top:0;margin-bottom:1.5rem}pre{max-height:none;overflow-y:auto;font-family:Menlo,Consolas,DejaVu Sans Mono,monospace;color:#111;background-color:#f2f2f2;border-radius:.25rem;padding:1rem}small{font-size:.875rem}dl{margin-bottom:1.5rem}dt{font-weight:700}dd{margin-left:0}dd,ol,ul{margin-bottom:1.5rem}ol,ul{line-height:1.5;margin-top:0}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}::-webkit-input-placeholder{color:#aaa}:-ms-input-placeholder{color:#aaa}::placeholder{color:#aaa}::-moz-selection{background-color:#0074d9;color:#fff;text-shadow:none!important}::selection{background-color:#0074d9;color:#fff;text-shadow:none!important}
 
 /*! Alerts */.alert{color:#004480;background-color:#bfdcf6;border:1px solid #b5d1ea;border-radius:.25rem;padding:1rem;margin-top:0;margin-bottom:1.5rem}.alert:empty{display:none}.alert a{color:currentcolor;font-weight:700}.alert>:last-child{margin-bottom:0}.alert.alert-secondary{color:#404040;background-color:#eaeaea;border-color:#dedede}.alert.alert-info{color:#1a6565;background-color:#cef2f2;border-color:#c4e6e6}.alert.alert-success{color:#186821;background-color:#cbf2cf;border-color:#c1e6c5}.alert.alert-warning{color:#803c00;background-color:#ffe1c6;border-color:#f2d6bc}.alert.alert-danger{color:#800600;background-color:#ffd0cd;border-color:#f2c6c3}.alert.alert-light{color:gray;background-color:#fff;border-color:#f2f2f2}.alert.alert-dark{color:#404040;background-color:#c4c4c4;border-color:#bababa}
 
diff --git a/source/css/content.css b/source/css/content.css
index 92ee7ac2d..3da068913 100644
--- a/source/css/content.css
+++ b/source/css/content.css
@@ -74,6 +74,11 @@ html {
   box-sizing: inherit;
 }
 
+/* Hidden property polyfill */
+[hidden] {
+  display: none !important;
+}
+
 /***************************************************************************************************
 * The basics
 ***************************************************************************************************/