add flex for edit-this-page div

assets/book.scss

@@ -133,6 +133,18 @@ ul.pagination {
   }
 }
 
+.book-git-footer {
+  display: flex;
+  margin-top: $padding-16;
+  font-size: $font-size-12;
+  align-items: baseline;
+
+  img {
+    width: $font-size-12;
+	vertical-align: bottom;
+  }
+}
+
 .book-posts {
   min-width: $body-min-width;
   max-width: $sm-breakpoint;

layouts/docs/baseof.html

@@ -29,6 +29,7 @@
     <div class="book-page">
       {{ partial "docs/mobile-header" . }}
       {{ template "main" . }}
+      {{ partial "docs/git-footer" . }}
     </div>
 
     {{ template "toc" . }}

static/svg/code-fork.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M21 3c0-1.657-1.343-3-3-3s-3 1.343-3 3c0 1.323.861 2.433 2.05 2.832.168 4.295-2.021 4.764-4.998 5.391-1.709.36-3.642.775-5.052 2.085v-7.492c1.163-.413 2-1.511 2-2.816 0-1.657-1.343-3-3-3s-3 1.343-3 3c0 1.305.837 2.403 2 2.816v12.367c-1.163.414-2 1.512-2 2.817 0 1.657 1.343 3 3 3s3-1.343 3-3c0-1.295-.824-2.388-1.973-2.808.27-3.922 2.57-4.408 5.437-5.012 3.038-.64 6.774-1.442 6.579-7.377 1.141-.425 1.957-1.514 1.957-2.803zm-16.8 0c0-.993.807-1.8 1.8-1.8s1.8.807 1.8 1.8-.807 1.8-1.8 1.8-1.8-.807-1.8-1.8zm3.6 18c0 .993-.807 1.8-1.8 1.8s-1.8-.807-1.8-1.8.807-1.8 1.8-1.8 1.8.807 1.8 1.8zm10.2-16.2c-.993 0-1.8-.807-1.8-1.8s.807-1.8 1.8-1.8 1.8.807 1.8 1.8-.807 1.8-1.8 1.8z"/></svg>