ignore some markdownlint warnings

assets/sass/components/_header.scss

@@ -19,7 +19,7 @@ header {
       color: $color-medium-dark;
 
       h1#name {
-        margin: 0 0 0 0.8em;
+        margin-left: 0.8em;
         font-size: 1.4em;
         font-weight: 500;
         letter-spacing: -0.01em;

assets/sass/pages/_single.scss

@@ -23,7 +23,8 @@ main#single {
   }
 
   h1#title {
-    margin: 0.3em 0 0.5em 0;
+    margin-top: 0.3em;
+    margin-bottom: 0.5em;
     font-size: 2.3em;
     line-height: 1.25;
     font-weight: 700;