diff --git a/src/skeleton/skeleton-class.css b/src/skeleton/skeleton-class.css
new file mode 100644
index 0000000..8334a05
--- /dev/null
+++ b/src/skeleton/skeleton-class.css
@@ -0,0 +1,210 @@
+.bluelib {
+  box-sizing: border-box;
+}
+.bluelib .container-main {
+  margin-left: auto;
+  margin-right: auto;
+  max-width: 1280px;
+}
+.bluelib .panel {
+  margin: 8px 0;
+  width: 100%;
+}
+.bluelib .panel > .panel {
+  margin: 0;
+}
+.bluelib .panel > .paragraph:first-child {
+  margin-top: 0;
+}
+.bluelib .panel > .paragraph:last-child {
+  margin-bottom: 0;
+}
+.bluelib .panel > .title:first-child {
+  margin-top: 4px;
+}
+.bluelib .panel > .title:last-child {
+  margin-bottom: 4px;
+}
+.bluelib .panel-box {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+}
+.bluelib .panel-blockquote {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  border-left-width: 2px;
+  border-top-width: 0;
+  border-bottom-width: 0;
+  border-right-width: 0;
+}
+.bluelib .panel-aside {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  border-width: 0;
+  font-size: smaller;
+}
+.bluelib .panel-table {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  display: table;
+  border-spacing: 0;
+  border-collapse: collapse;
+}
+.bluelib .panel-split {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  justify-content: center;
+}
+.bluelib .panel-split > * {
+  flex-grow: 1;
+  flex-shrink: 0;
+  flex-basis: 0;
+}
+.bluelib .status-disabled {
+  cursor: not-allowed;
+}
+.bluelib .status-hoverable {
+  cursor: help;
+}
+.bluelib .status-clickable {
+  cursor: pointer;
+}
+.bluelib .spoiler {
+  filter: blur(5px);
+  cursor: help;
+}
+.bluelib .spoiler:hover {
+  filter: none;
+}
+.bluelib .element-title {
+  text-align: center;
+}
+.bluelib .element-separator {
+  border-width: 1px;
+}
+.bluelib .element-list-item {
+  margin: 10px 0;
+}
+.bluelib .align-left {
+  text-align: left;
+}
+.bluelib .align-center {
+  text-align: center;
+}
+.bluelib .align-right {
+  text-align: right;
+}
+.bluelib .size-xxl {
+  font-size: xx-large;
+}
+.bluelib .size-xl {
+  font-size: x-large;
+}
+.bluelib .size-l {
+  font-size: large;
+}
+.bluelib .size-m {
+  font-size: medium;
+}
+.bluelib .size-s {
+  font-size: small;
+}
+.bluelib .size-xs {
+  font-size: x-small;
+}
+.bluelib .size-xxs {
+  font-size: xx-small;
+}
+.bluelib .style-bold {
+  font-weight: bold;
+}
+.bluelib .style-italic {
+  font-style: italic;
+}
+.bluelib .style-underline {
+  text-decoration-line: underline;
+}
+.bluelib .style-strike {
+  text-decoration-line: line-through;
+}
+.bluelib .color-red {
+  color: red;
+}
+.bluelib .color-orange {
+  color: orange;
+}
+.bluelib .color-yellow {
+  color: #dddd00;
+}
+.bluelib .color-lime {
+  color: lime;
+}
+.bluelib .color-cyan {
+  color: cyan;
+}
+.bluelib .color-blue {
+  color: blue;
+}
+.bluelib .color-magenta {
+  color: magenta;
+}
+.bluelib h1,
+.bluelib h2,
+.bluelib h3,
+.bluelib h4,
+.bluelib h5,
+.bluelib h6 {
+  text-align: center;
+}
+.bluelib hr {
+  border-width: 1px;
+}
+.bluelib h1 {
+  font-size: xx-large;
+}
+.bluelib h2 {
+  font-size: x-large;
+}
+.bluelib h3 {
+  font-size: large;
+}
+.bluelib h4 {
+  font-size: medium;
+}
+.bluelib h5 {
+  font-size: small;
+}
+.bluelib h6 {
+  font-size: x-small;
+}
+.bluelib b {
+  font-weight: bold;
+}
+.bluelib i {
+  font-style: italic;
+}
+.bluelib u {
+  text-decoration-line: underline;
+}
+.bluelib li {
+  margin: 10px 0;
+}
+.bluelib *[title] {
+  cursor: help;
+}
+.bluelib *[disabled] {
+  cursor: not-allowed;
+}
+.bluelib *[onclick] {
+  cursor: pointer;
+}
+/*# sourceMappingURL=skeleton-class.css.map */
\ No newline at end of file
diff --git a/src/skeleton/skeleton-class.css.map b/src/skeleton/skeleton-class.css.map
new file mode 100644
index 0000000..a191931
--- /dev/null
+++ b/src/skeleton/skeleton-class.css.map
@@ -0,0 +1 @@
+{"version":3,"sources":["skeleton-class.less","skeleton.less"],"names":[],"mappings":"AAEA;ECGI,sBAAA;;ADHJ,QCSI;EACI,iBAAA;EACA,kBAAA;EACA,iBAAA;;ADZR,QCmBI;EACI,aAAA;EACA,WAAA;;ADrBR,QCmBI,OAII;EACI,SAAA;;AAKA,QAVR,OASI,aACK;EACG,aAAA;;AAGJ,QAdR,OASI,aAKK;EACG,gBAAA;;AAMJ,QArBR,OAoBI,SACK;EACG,eAAA;;AAGJ,QAzBR,OAoBI,SAKK;EACG,kBAAA;;AD7ChB,QCmDI;EACI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;;ADvDR,QC2DI;EAPI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAOA,sBAAA;EACA,mBAAA;EACA,sBAAA;EACA,qBAAA;;ADjER,QCqEI;EAjBI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAiBA,eAAA;EACA,kBAAA;;ADzER,QC6EI;EAzBI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAyBA,cAAA;EACA,iBAAA;EACA,yBAAA;;ADlFR,QCsFI;EACI,aAAA;EACA,eAAA;EACA,QAAA;EACA,uBAAA;;AD1FR,QCsFI,aAMI;EACI,YAAA;EACA,cAAA;EACA,aAAA;;AD/FZ,QCqGI;EACI,mBAAA;;ADtGR,QCyGI;EACI,YAAA;;AD1GR,QC6GI;EACI,eAAA;;AD9GR,QCmHI;EACI,QAAQ,SAAR;EACA,YAAA;;AAEA,QAJJ,SAIK;EACG,YAAA;;ADxHZ,QC8HI;EAuBI,kBAAA;;ADrJR,QCsII;EACI,iBAAA;;ADvIR,QC0II;EACI,cAAA;;AD3IR,QCgJI;EACI,gBAAA;;ADjJR,QCoJI;EACI,kBAAA;;ADrJR,QCwJI;EACI,iBAAA;;ADzJR,QC8JI;EACI,mBAAA;;AD/JR,QCkKI;EACI,kBAAA;;ADnKR,QCsKI;EACI,gBAAA;;ADvKR,QC0KI;EACI,iBAAA;;AD3KR,QC8KI;EACI,gBAAA;;AD/KR,QCkLI;EACI,kBAAA;;ADnLR,QCsLI;EACI,mBAAA;;ADvLR,QC4LI;EACI,iBAAA;;AD7LR,QCgMI;EACI,kBAAA;;ADjMR,QCoMI;EACI,+BAAA;;ADrMR,QCwMI;EACI,kCAAA;;ADzMR,QC8MI;EACI,UAAA;;AD/MR,QCkNI;EACI,aAAA;;ADnNR,QCsNI;EACI,cAAA;;ADvNR,QC0NI;EACI,WAAA;;AD3NR,QC8NI;EACI,WAAA;;AD/NR,QCkOI;EACI,WAAA;;ADnOR,QCsOI;EACI,cAAA;;ADvOR,QC4OI;AD5OJ,QC4OQ;AD5OR,QC4OY;AD5OZ,QC4OgB;AD5OhB,QC4OoB;AD5OpB,QC4OwB;EAvFhB,kBAAA;;ADrJR,QCgPI;EAzGI,iBAAA;;ADvIR,QCwPI;EAzFI,mBAAA;;AD/JR,QC4PI;EAzFI,kBAAA;;ADnKR,QCgQI;EAzFI,gBAAA;;ADvKR,QCoQI;EAzFI,iBAAA;;AD3KR,QCwQI;EAzFI,gBAAA;;AD/KR,QC4QI;EAzFI,kBAAA;;ADnLR,QCgRI;EAnFI,iBAAA;;AD7LR,QCoRI;EAnFI,kBAAA;;ADjMR,QCwRI;EAnFI,+BAAA;;ADrMR,QC4RI;EAjJI,cAAA;;AD3IR,QCgSI,EAAC;EAtLG,YAAA;;AD1GR,QCoSI,EAAC;EA9LG,mBAAA;;ADtGR,QCwSI,EAAC;EA1LG,eAAA","file":"skeleton-class.css"}
\ No newline at end of file
diff --git a/src/skeleton/skeleton-class.less b/src/skeleton/skeleton-class.less
new file mode 100644
index 0000000..b469ab8
--- /dev/null
+++ b/src/skeleton/skeleton-class.less
@@ -0,0 +1,5 @@
+@import "skeleton";
+
+.bluelib {
+    .bluelib-skeleton();
+}
diff --git a/src/skeleton/skeleton-root.css b/src/skeleton/skeleton-root.css
new file mode 100644
index 0000000..a24204b
--- /dev/null
+++ b/src/skeleton/skeleton-root.css
@@ -0,0 +1,210 @@
+:root {
+  box-sizing: border-box;
+}
+:root .container-main {
+  margin-left: auto;
+  margin-right: auto;
+  max-width: 1280px;
+}
+:root .panel {
+  margin: 8px 0;
+  width: 100%;
+}
+:root .panel > .panel {
+  margin: 0;
+}
+:root .panel > .paragraph:first-child {
+  margin-top: 0;
+}
+:root .panel > .paragraph:last-child {
+  margin-bottom: 0;
+}
+:root .panel > .title:first-child {
+  margin-top: 4px;
+}
+:root .panel > .title:last-child {
+  margin-bottom: 4px;
+}
+:root .panel-box {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+}
+:root .panel-blockquote {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  border-left-width: 2px;
+  border-top-width: 0;
+  border-bottom-width: 0;
+  border-right-width: 0;
+}
+:root .panel-aside {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  border-width: 0;
+  font-size: smaller;
+}
+:root .panel-table {
+  padding: 8px;
+  border-radius: 4px;
+  border-width: 2px;
+  background-color: rgba(0, 0, 0, 0.025);
+  display: table;
+  border-spacing: 0;
+  border-collapse: collapse;
+}
+:root .panel-split {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  justify-content: center;
+}
+:root .panel-split > * {
+  flex-grow: 1;
+  flex-shrink: 0;
+  flex-basis: 0;
+}
+:root .status-disabled {
+  cursor: not-allowed;
+}
+:root .status-hoverable {
+  cursor: help;
+}
+:root .status-clickable {
+  cursor: pointer;
+}
+:root .spoiler {
+  filter: blur(5px);
+  cursor: help;
+}
+:root .spoiler:hover {
+  filter: none;
+}
+:root .element-title {
+  text-align: center;
+}
+:root .element-separator {
+  border-width: 1px;
+}
+:root .element-list-item {
+  margin: 10px 0;
+}
+:root .align-left {
+  text-align: left;
+}
+:root .align-center {
+  text-align: center;
+}
+:root .align-right {
+  text-align: right;
+}
+:root .size-xxl {
+  font-size: xx-large;
+}
+:root .size-xl {
+  font-size: x-large;
+}
+:root .size-l {
+  font-size: large;
+}
+:root .size-m {
+  font-size: medium;
+}
+:root .size-s {
+  font-size: small;
+}
+:root .size-xs {
+  font-size: x-small;
+}
+:root .size-xxs {
+  font-size: xx-small;
+}
+:root .style-bold {
+  font-weight: bold;
+}
+:root .style-italic {
+  font-style: italic;
+}
+:root .style-underline {
+  text-decoration-line: underline;
+}
+:root .style-strike {
+  text-decoration-line: line-through;
+}
+:root .color-red {
+  color: red;
+}
+:root .color-orange {
+  color: orange;
+}
+:root .color-yellow {
+  color: #dddd00;
+}
+:root .color-lime {
+  color: lime;
+}
+:root .color-cyan {
+  color: cyan;
+}
+:root .color-blue {
+  color: blue;
+}
+:root .color-magenta {
+  color: magenta;
+}
+:root h1,
+:root h2,
+:root h3,
+:root h4,
+:root h5,
+:root h6 {
+  text-align: center;
+}
+:root hr {
+  border-width: 1px;
+}
+:root h1 {
+  font-size: xx-large;
+}
+:root h2 {
+  font-size: x-large;
+}
+:root h3 {
+  font-size: large;
+}
+:root h4 {
+  font-size: medium;
+}
+:root h5 {
+  font-size: small;
+}
+:root h6 {
+  font-size: x-small;
+}
+:root b {
+  font-weight: bold;
+}
+:root i {
+  font-style: italic;
+}
+:root u {
+  text-decoration-line: underline;
+}
+:root li {
+  margin: 10px 0;
+}
+:root *[title] {
+  cursor: help;
+}
+:root *[disabled] {
+  cursor: not-allowed;
+}
+:root *[onclick] {
+  cursor: pointer;
+}
+/*# sourceMappingURL=skeleton-root.css.map */
\ No newline at end of file
diff --git a/src/skeleton/skeleton-root.css.map b/src/skeleton/skeleton-root.css.map
new file mode 100644
index 0000000..2174bab
--- /dev/null
+++ b/src/skeleton/skeleton-root.css.map
@@ -0,0 +1 @@
+{"version":3,"sources":["skeleton-root.less","skeleton.less"],"names":[],"mappings":"AAEA;ECGI,sBAAA;;ADHJ,KCSI;EACI,iBAAA;EACA,kBAAA;EACA,iBAAA;;ADZR,KCmBI;EACI,aAAA;EACA,WAAA;;ADrBR,KCmBI,OAII;EACI,SAAA;;AAKA,KAVR,OASI,aACK;EACG,aAAA;;AAGJ,KAdR,OASI,aAKK;EACG,gBAAA;;AAMJ,KArBR,OAoBI,SACK;EACG,eAAA;;AAGJ,KAzBR,OAoBI,SAKK;EACG,kBAAA;;AD7ChB,KCmDI;EACI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;;ADvDR,KC2DI;EAPI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAOA,sBAAA;EACA,mBAAA;EACA,sBAAA;EACA,qBAAA;;ADjER,KCqEI;EAjBI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAiBA,eAAA;EACA,kBAAA;;ADzER,KC6EI;EAzBI,YAAA;EACA,kBAAA;EACA,iBAAA;EACA,sCAAA;EAyBA,cAAA;EACA,iBAAA;EACA,yBAAA;;ADlFR,KCsFI;EACI,aAAA;EACA,eAAA;EACA,QAAA;EACA,uBAAA;;AD1FR,KCsFI,aAMI;EACI,YAAA;EACA,cAAA;EACA,aAAA;;AD/FZ,KCqGI;EACI,mBAAA;;ADtGR,KCyGI;EACI,YAAA;;AD1GR,KC6GI;EACI,eAAA;;AD9GR,KCmHI;EACI,QAAQ,SAAR;EACA,YAAA;;AAEA,KAJJ,SAIK;EACG,YAAA;;ADxHZ,KC8HI;EAuBI,kBAAA;;ADrJR,KCsII;EACI,iBAAA;;ADvIR,KC0II;EACI,cAAA;;AD3IR,KCgJI;EACI,gBAAA;;ADjJR,KCoJI;EACI,kBAAA;;ADrJR,KCwJI;EACI,iBAAA;;ADzJR,KC8JI;EACI,mBAAA;;AD/JR,KCkKI;EACI,kBAAA;;ADnKR,KCsKI;EACI,gBAAA;;ADvKR,KC0KI;EACI,iBAAA;;AD3KR,KC8KI;EACI,gBAAA;;AD/KR,KCkLI;EACI,kBAAA;;ADnLR,KCsLI;EACI,mBAAA;;ADvLR,KC4LI;EACI,iBAAA;;AD7LR,KCgMI;EACI,kBAAA;;ADjMR,KCoMI;EACI,+BAAA;;ADrMR,KCwMI;EACI,kCAAA;;ADzMR,KC8MI;EACI,UAAA;;AD/MR,KCkNI;EACI,aAAA;;ADnNR,KCsNI;EACI,cAAA;;ADvNR,KC0NI;EACI,WAAA;;AD3NR,KC8NI;EACI,WAAA;;AD/NR,KCkOI;EACI,WAAA;;ADnOR,KCsOI;EACI,cAAA;;ADvOR,KC4OI;AD5OJ,KC4OQ;AD5OR,KC4OY;AD5OZ,KC4OgB;AD5OhB,KC4OoB;AD5OpB,KC4OwB;EAvFhB,kBAAA;;ADrJR,KCgPI;EAzGI,iBAAA;;ADvIR,KCwPI;EAzFI,mBAAA;;AD/JR,KC4PI;EAzFI,kBAAA;;ADnKR,KCgQI;EAzFI,gBAAA;;ADvKR,KCoQI;EAzFI,iBAAA;;AD3KR,KCwQI;EAzFI,gBAAA;;AD/KR,KC4QI;EAzFI,kBAAA;;ADnLR,KCgRI;EAnFI,iBAAA;;AD7LR,KCoRI;EAnFI,kBAAA;;ADjMR,KCwRI;EAnFI,+BAAA;;ADrMR,KC4RI;EAjJI,cAAA;;AD3IR,KCgSI,EAAC;EAtLG,YAAA;;AD1GR,KCoSI,EAAC;EA9LG,mBAAA;;ADtGR,KCwSI,EAAC;EA1LG,eAAA","file":"skeleton-root.css"}
\ No newline at end of file
diff --git a/src/skeleton/skeleton-root.less b/src/skeleton/skeleton-root.less
new file mode 100644
index 0000000..62f7937
--- /dev/null
+++ b/src/skeleton/skeleton-root.less
@@ -0,0 +1,5 @@
+@import "skeleton";
+
+:root {
+    .bluelib-skeleton();
+}
diff --git a/src/skeleton/skeleton.less b/src/skeleton/skeleton.less
new file mode 100644
index 0000000..9bebe9e
--- /dev/null
+++ b/src/skeleton/skeleton.less
@@ -0,0 +1,302 @@
+// This mixin should contain ONLY positioning and layout rules.
+// They will be compiled later to different targets.
+
+.bluelib-skeleton() {
+    // Reset the insane box-sizing default
+    box-sizing: border-box;
+
+    // === RULES ===
+
+    // --- Containers ---
+
+    .container-main {
+        margin-left: auto;
+        margin-right: auto;
+        max-width: 1280px;
+    }
+
+
+    // --- Panels ---
+    // Remember to use BOTH the panel AND the panel-* class when using a panel element!
+
+    .panel {
+        margin: 8px 0;
+        width: 100%;
+
+        > .panel {
+            margin: 0;
+        }
+
+        // Remove the margin from paragraphs, if they are the first or last element of the panel
+        > .paragraph {
+            &:first-child {
+                margin-top: 0;
+            }
+
+            &:last-child {
+                margin-bottom: 0;
+            }
+        }
+
+        // Reduce the margin from titles, if they are the first or last element of the panel
+        > .title {
+            &:first-child {
+                margin-top: 4px;
+            }
+
+            &:last-child {
+                margin-bottom: 4px;
+            }
+        }
+    }
+
+    // A generic content box
+    .panel-box {
+        padding: 8px;
+        border-radius: 4px;
+        border-width: 2px;
+        background-color: rgba(0, 0, 0, 0.025);  // Make the panel more noticeable on a white background
+    }
+
+    // Should be the same as a box, but with a quote-like border
+    .panel-blockquote {
+        .panel-box();
+
+        border-left-width: 2px;
+        border-top-width: 0;
+        border-bottom-width: 0;
+        border-right-width: 0;
+    }
+
+    // Should be the same as a box, but with smaller text and no border
+    .panel-aside {
+        .panel-box();
+
+        border-width: 0;
+        font-size: smaller;
+    }
+
+    // Should be the same as a box, but display its contents differently
+    .panel-table {
+        .panel-box();
+
+        display: table;
+        border-spacing: 0;
+        border-collapse: collapse;
+    }
+
+    // Evenly split the panels contained inside
+    .panel-split {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 8px;
+        justify-content: center;
+
+        > * {
+            flex-grow: 1;
+            flex-shrink: 0;
+            flex-basis: 0;
+        }
+    }
+
+    // --- Element status ---
+
+    .status-disabled {
+        cursor: not-allowed;
+    }
+
+    .status-hoverable {
+        cursor: help;
+    }
+
+    .status-clickable {
+        cursor: pointer;
+    }
+
+    // --- Spoilers ---
+
+    .spoiler {
+        filter: blur(5px);
+        cursor: help;
+
+        &:hover {
+            filter: none;
+        }
+    }
+
+    // --- Elements ---
+
+    .element-title {
+        .align-center();
+    }
+
+    .element-paragraph {
+
+    }
+
+    .element-separator {
+        border-width: 1px;
+    }
+
+    .element-list-item {
+        margin: 10px 0;
+    }
+
+    // --- Alignment ---
+
+    .align-left {
+        text-align: left;
+    }
+
+    .align-center {
+        text-align: center;
+    }
+
+    .align-right {
+        text-align: right;
+    }
+
+    // --- Sizes ---
+
+    .size-xxl {
+        font-size: xx-large;
+    }
+
+    .size-xl {
+        font-size: x-large;
+    }
+
+    .size-l {
+        font-size: large;
+    }
+
+    .size-m {
+        font-size: medium;
+    }
+
+    .size-s {
+        font-size: small;
+    }
+
+    .size-xs {
+        font-size: x-small;
+    }
+
+    .size-xxs {
+        font-size: xx-small;
+    }
+
+    // --- Styles ---
+
+    .style-bold {
+        font-weight: bold;
+    }
+
+    .style-italic {
+        font-style: italic;
+    }
+
+    .style-underline {
+        text-decoration-line: underline;
+    }
+
+    .style-strike {
+        text-decoration-line: line-through;
+    }
+
+    // --- Colors ---
+
+    .color-red {
+        color: red;
+    }
+
+    .color-orange {
+        color: orange;
+    }
+
+    .color-yellow {
+        color: #dddd00;  // Pure yellow isn't readable on a white background
+    }
+
+    .color-lime {
+        color: lime;
+    }
+
+    .color-cyan {
+        color: cyan;
+    }
+
+    .color-blue {
+        color: blue;
+    }
+
+    .color-magenta {
+        color: magenta;
+    }
+
+    // === INHERITANCES ===
+
+    h1, h2, h3, h4, h5, h6 {
+        .element-title();
+    }
+
+    hr {
+        .element-separator();
+    }
+
+    p {
+        .element-paragraph();
+    }
+
+    h1 {
+        .size-xxl();
+    }
+
+    h2 {
+        .size-xl();
+    }
+
+    h3 {
+        .size-l();
+    }
+
+    h4 {
+        .size-m();
+    }
+
+    h5 {
+        .size-s();
+    }
+
+    h6 {
+        .size-xs();
+    }
+
+    b {
+        .style-bold();
+    }
+
+    i {
+        .style-italic();
+    }
+
+    u {
+        .style-underline();
+    }
+
+    li {
+        .element-list-item();
+    }
+
+    *[title] {
+        .status-hoverable();
+    }
+
+    *[disabled] {
+        .status-disabled();
+    }
+
+    *[onclick] {
+        .status-clickable();
+    }
+}