style & homepage tweaks

assets/sass/pages/_home.scss

@@ -25,7 +25,7 @@ main#home {
 
   h3 {
     margin: 0.6em 0;
-    font-size: 1.15em;
+    font-size: 1.2em;
     font-weight: 400;
     line-height: 1.4;
   }
@@ -65,7 +65,7 @@ main#home {
     &#blog {
       font-size: 0.9em;
       margin-bottom: 0;
-  
+
       span {
         margin-right: 4px;
       }
@@ -84,6 +84,7 @@ main#home {
     margin: 0 0 0.5em 1em;
     padding: 4px;
     border: 1px solid $color-super-light;
+    border-radius: 50%;
     width: 160px;
     height: 160px;
   }
@@ -96,12 +97,12 @@ main#home {
     font-size: 1.1em;
     line-height: 1.6;
     padding: 1em 1.2em 0.5em 1.2em;
-  
+
     img#me {
       width: 85px;
       height: 85px;
       margin: 0 0 0.3em 0.6em;
       padding: 2px;
     }
-  }  
+  }
 }

assets/sass/pages/_single.scss

@@ -9,7 +9,7 @@ main#single {
   article div {
     &#content {
       font-weight: 400;
-      line-height: 1.8;
+      line-height: 1.7;
 
       h1,
       h2,
@@ -106,7 +106,7 @@ main#single {
       // all code
       div.highlight, code {
         // https://markdotto.com/2018/02/07/github-system-fonts/
-        font-family: "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", "Courier", monospace;
+        font-family: $system-fonts-monospace;
         background: $color-super-duper-light;
         font-size: 0.9em;
         page-break-inside: avoid;