First commit.

sass/navigation/more-link/_more-link.scss

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+// "More" link
+//
+// Styles the "Read more…" and "Help" links common in Drupal.
+//
+// Markup: more-link.twig
+//
+// Style guide: navigation.more-link
+
+.more-link,
+%more-link {
+  text-align: right;
+
+  @include rtl() {
+    text-align: left;
+  }
+
+  &__help-icon {
+    padding: 1px 0 1px 20px;
+    background-image: image-url('navigation', 'more-link/more-link__help-icon.svg');
+    background-position: 0 50%;
+    background-repeat: no-repeat;
+
+    @include rtl() {
+      padding: 1px 20px 1px 0;
+      background-position: 100% 50%;
+    }
+  }
+}
+
+//
+// Drupal selectors.
+//
+
+.more-help-link {
+  @extend %more-link;
+
+  a {
+    @extend %more-link__help-icon;
+  }
+}

sass/navigation/more-link/more-link.twig

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+<div class="more-link {{modifier_class}}">
+  <a href="#">Read more…</a>
+</div>
+
+<div class="more-link {{modifier_class}}">
+  <a class="more-link__help-icon" href="#">Help</a>
+</div>

sass/navigation/more-link/more-link__help-icon.svg

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+<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg width="16" height="16" viewBox="0 0 16 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve"><circle cx="8" cy="8" r="7" fill="#c5c5c5"/><path d="M8.767,10.847l-1.644,0c-0.004,-0.236 -0.007,-1.216 -0.007,-1.268c0,-0.533 0.089,-0.972 0.265,-1.316c0.176,-0.343 0.529,-0.73 1.058,-1.16c0.528,-0.43 0.844,-0.712 0.948,-0.845c0.159,-0.211 0.238,-0.443 0.238,-0.697c0,-0.352 -0.141,-0.654 -0.422,-0.906c-0.282,-0.251 -0.661,-0.377 -1.139,-0.377c-0.46,0 -0.844,0.131 -1.154,0.393c-0.309,0.263 -0.522,0.662 -0.638,1.2l-1.664,-0.207c0.047,-0.769 0.375,-1.423 0.983,-1.96c0.609,-0.538 1.407,-0.806 2.396,-0.806c1.041,0 1.868,0.272 2.483,0.816c0.615,0.543 0.922,1.177 0.922,1.899c0,0.4 -0.113,0.778 -0.338,1.135c-0.226,0.357 -0.709,0.843 -1.448,1.457c-0.383,0.319 -0.62,0.574 -0.713,0.768c-0.092,0.193 -0.134,1.376 -0.126,1.874ZM7.123,13.102l0,-1.629l1.666,0l0,1.629l-1.666,0Z" fill="#fff"/></svg>