feat: add code styling

Author: fizzyizzy05

sass/_body.scss

@@ -7,6 +7,14 @@
         background-color: #{$dark-background-colour};
         color: #ffffff;
 
+        code {
+            background-color: #{color.adjust(
+                $dark-background-colour,
+                $lightness: -12.5%,
+                $alpha: -0.5,
+            )};   
+        }
+
         a {
             transition: color 0.25s;
             color: color.mix(
@@ -56,6 +64,14 @@
         background-color: #{$light-background-colour};
         color: #000000;
 
+        code {
+            background-color: #{color.adjust(
+                $light-background-colour,
+                $lightness: -17.5%,
+                $alpha: -0.5,
+            )};   
+        }
+
         a {
             transition: color 0.25s;
             color: color.mix(
@@ -113,18 +129,23 @@ html {
 }
 
 body {
-    font-family: 'figtree';
-
-    h1 {
-        font-weight: 800;
-    }
-
     margin: 0;
     min-height: 100vh;
     display: flex;
     flex-direction: column;
     justify-content: space-between;
 
+    font-family: 'figtree', sans-serif;
+
+    h1 {
+        font-weight: 800;
+    }
+
+    code {
+        padding: 0.125em 0.25em;
+        border-radius: 8px;
+    }
+
     section.main {
         margin-block: 2;