diff --git a/_includes/footer.css b/_includes/footer.css
new file mode 100644
index 0000000..fa02388
--- /dev/null
+++ b/_includes/footer.css
@@ -0,0 +1,30 @@
+footer {
+  border-top: 1px dotted rgba(0,0,0,.15);
+  padding: 4rem 0;
+}
+
+#footerNav ul {
+  margin: 0;
+  padding: 0;
+  display: flex;
+  gap: 1em;
+}
+
+#footerNav li {
+  display: inline;
+}
+
+.footer-container {
+  max-width: var(--page-width);
+  margin-left: auto;
+  margin-right: auto;
+  display: grid;
+  grid-template-columns: auto auto;
+  grid-auto-flow: column;
+  grid-template-rows: 1fr 1fr;
+  gap: 1em;
+}
+
+.footer-container > :nth-last-child(-n + 2) {
+  text-align: end;
+}
diff --git a/_includes/footer.njk b/_includes/footer.njk
index 41f5ace..3f6468d 100644
--- a/_includes/footer.njk
+++ b/_includes/footer.njk
@@ -20,30 +20,5 @@
 </footer>
 
 {% css %}
-footer {
-  border-top: 1px dotted rgba(0,0,0,.15);
-  padding: 4rem 0;
-}
-#footerNav ul {
-  margin: 0;
-  padding: 0;
-  display: flex;
-  gap: 1em;
-}
-#footerNav li {
-  display: inline;
-}
-.footer-container {
-  max-width: var(--page-width);
-  margin-left: auto;
-  margin-right: auto;
-  display: grid;
-  grid-template-columns: auto auto;
-  grid-auto-flow: column;
-  grid-template-rows: 1fr 1fr;
-  gap: 1em;
-}
-.footer-container > :nth-last-child(-n + 2) {
-  text-align: end;
-}
+  {% include "footer.css" %}
 {% endcss %}
diff --git a/_includes/header.css b/_includes/header.css
new file mode 100644
index 0000000..56b409a
--- /dev/null
+++ b/_includes/header.css
@@ -0,0 +1,57 @@
+header {
+  display: flex;
+  position: sticky;
+  top: 0;
+  min-height: 6.4rem;
+  padding: 2rem 0;
+  backdrop-filter: blur(5px);
+  background-color: rgba(255,255,255,.92);
+  box-shadow: 0 3px 15px hsla(0,0%,39.2%,.12);
+}
+
+.header-container {
+  width: 100%;
+  max-width: var(--page-width);
+  margin-left: auto;
+  margin-right: auto;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+#mainNav ul {
+  margin: 0;
+  padding: 0;
+}
+
+#mainNav li {
+  display: inline;
+  margin-left: 1rem;
+}
+
+#mainNav a {
+  position: relative;
+  font-size: 16px;
+  font-family: Aileron;
+  font-weight: 500;
+  line-height: 2;
+  text-transform: uppercase;
+  color: var(--color-text);
+  text-decoration: none;
+}
+
+#mainNav a::after {
+  content: "";
+  position: absolute;
+  background: var(--color-primary);
+  opacity: 0;
+  bottom: -4px;
+  left: 0;
+  right: 0;
+  height: 2px;
+  transition: opacity .3s ease-out;
+}
+
+#mainNav a:hover::after {
+  opacity: 1;
+}
diff --git a/_includes/header.njk b/_includes/header.njk
index c1a5d66..0e9a6d7 100644
--- a/_includes/header.njk
+++ b/_includes/header.njk
@@ -8,55 +8,5 @@
 </header>
 
 {% css %}
-header {
-  display: flex;
-  position: sticky;
-  top: 0;
-  min-height: 6.4rem;
-  padding: 2rem 0;
-  backdrop-filter: blur(5px);
-  background-color: rgba(255,255,255,.92);
-  box-shadow: 0 3px 15px hsla(0,0%,39.2%,.12);
-}
-.header-container {
-  width: 100%;
-  max-width: var(--page-width);
-  margin-left: auto;
-  margin-right: auto;
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-}
-#mainNav ul {
-  margin: 0;
-  padding: 0;
-}
-#mainNav li {
-  display: inline;
-  margin-left: 1rem;
-}
-#mainNav a {
-  position: relative;
-  font-size: 16px;
-  font-family: Aileron;
-  font-weight: 500;
-  line-height: 2;
-  text-transform: uppercase;
-  color: var(--color-text);
-  text-decoration: none;
-}
-#mainNav a::after {
-  content: "";
-  position: absolute;
-  background: var(--color-primary);
-  opacity: 0;
-  bottom: -4px;
-  left: 0;
-  right: 0;
-  height: 2px;
-  transition: opacity .3s ease-out;
-}
-#mainNav a:hover::after {
-  opacity: 1;
-}
+  {% include "header.css" %}
 {% endcss %}
diff --git a/_includes/page.css b/_includes/page.css
new file mode 100644
index 0000000..7f0bbea
--- /dev/null
+++ b/_includes/page.css
@@ -0,0 +1,62 @@
+* {
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  font-family: Aileron, sans-serif;
+  line-height: 1.5;
+  color: var(--color-text);
+}
+
+main {
+  max-width: var(--page-width);
+  margin-left: auto;
+  margin-right: auto;
+}
+
+h1, h2, h3, h4 {
+  color: var(--color-primary);
+}
+
+h1 {
+  font-weight: 700;
+  font-size: 2.8rem;
+  text-transform: uppercase;
+}
+
+h2 {
+  font-weight: 300;
+  font-size: 2.4rem;
+  line-height: 2;
+}
+
+h3 {
+  font-weight: 300;
+  font-size: 1.8rem;
+  line-height: 2;
+}
+
+h4 {
+  font-weight: 400;
+  font-size: 1.3rem;
+  line-height: 2;
+}
+
+h5 {
+  font-weight: 700;
+  font-size: 1rem;
+  margin-bottom: 1rem;
+}
+
+p {
+  line-height: 1.8;
+}
+
+:root {
+  font-size: 17px;
+  --page-width: 75rem;
+  --color-text: #495057;
+  --color-primary: {{ eseColor }};
+}
+
diff --git a/_layouts/page.njk b/_layouts/page.njk
index e21301f..86fa668 100644
--- a/_layouts/page.njk
+++ b/_layouts/page.njk
@@ -24,55 +24,5 @@ eleventyComputed:
 </html>
 
 {% css %}
-:root {
-  --page-width: 75rem;
-  --color-text: #495057;
-  --color-primary: {{ eseColor }};
-  font-size: 17px;
-}
-* {
-  box-sizing: border-box;
-}
-body {
-  margin: 0;
-  font-family: Aileron, sans-serif;
-  line-height: 1.5;
-  color: var(--color-text);
-}
-main {
-  max-width: var(--page-width);
-  margin-left: auto;
-  margin-right: auto;
-}
-h1, h2, h3, h4 {
-  color: var(--color-primary);
-}
-h1 {
-  font-weight: 700;
-  font-size: 2.8rem;
-  text-transform: uppercase;
-}
-h2 {
-  font-weight: 300;
-  font-size: 2.4rem;
-  line-height: 2;
-}
-h3 {
-  font-weight: 300;
-  font-size: 1.8rem;
-  line-height: 2;
-}
-h4 {
-  font-weight: 400;
-  font-size: 1.3rem;
-  line-height: 2;
-}
-h5 {
-  font-weight: 700;
-  font-size: 1rem;
-  margin-bottom: 1rem;
-}
-p {
-  line-height: 1.8;
-}
+  {% include "page.css" %}
 {% endcss %}