Add anchor links to heading (#38)

* Closes #36

assets/scss/style.scss

@@ -22,6 +22,7 @@ html {
   background: $light-grey;
   line-height: 1.6;
   letter-spacing: .06em;
+  scroll-behavior: smooth;
 }
 
 body,
@@ -534,6 +535,39 @@ hr.post-end {
     padding: 0;
     margin-left: 1.8em;
   }
+
+  a.anchor {
+    float: left;
+    margin-left: -20px;
+    padding-right: 6px;
+    box-shadow: none;
+    opacity: .8;
+    &:hover {
+      background: none;
+      color: $theme;
+      opacity: 1;
+    }
+
+    svg {
+      display: inline-block;
+      width: 14px;
+      height: 14px;
+      vertical-align: baseline;
+      visibility: hidden;
+    }
+    &:focus svg {
+      visibility: visible;
+    }
+  }
+
+  h1:hover a.anchor svg,
+  h2:hover a.anchor svg,
+  h3:hover a.anchor svg,
+  h4:hover a.anchor svg,
+  h5:hover a.anchor svg,
+  h6:hover a.anchor svg {
+    visibility: visible;
+  }
 }
 
 .footnotes {

layouts/_default/single.html

@@ -19,7 +19,7 @@
 	<main class="site-main section-inner thin animated fadeIn faster">
 		<h1>{{ .Title }}</h1>
 		<div class="content">
-			{{ .Content }}
+			{{ .Content | replaceRE "(<h[1-6] id=\"([^\"]+)\".+)(</h[1-6]+>)" `${1}<a href="#${2}" class="anchor" aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 7h3a5 5 0 0 1 5 5 5 5 0 0 1-5 5h-3m-6 0H6a5 5 0 0 1-5-5 5 5 0 0 1 5-5h3"></path><line x1="8" y1="12" x2="16" y2="12"></line></svg></a>${3}` | safeHTML }}
 		</div>
 		{{- if .Params.comments }}
 		<div id="comments" class="thin">

layouts/posts/single.html

@@ -23,7 +23,7 @@
 				<h1>{{ .Title }}</h1>
 			</header>
 			<div class="content">
-				{{ .Content }}
+				{{ .Content | replaceRE "(<h[1-6] id=\"([^\"]+)\".+)(</h[1-6]+>)" `${1}<a href="#${2}" class="anchor" aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 7h3a5 5 0 0 1 5 5 5 5 0 0 1-5 5h-3m-6 0H6a5 5 0 0 1-5-5 5 5 0 0 1 5-5h3"></path><line x1="8" y1="12" x2="16" y2="12"></line></svg></a>${3}` | safeHTML }}
 			</div>
 			<hr class="post-end">
 			<footer class="post-info">

resources/_gen/assets/scss/scss/style.scss_c16d144eee185fbddd582cd5e25a4fae.content

@@ -2,4 +2,4 @@
 * Version - 3.7.0
 * Licensed under the MIT license - http://opensource.org/licenses/MIT
 *
-* Copyright (c) 2018 Daniel Eden*/@-webkit-keyframes bounceInRight{0%,60%,75%,90%,to{-webkit-animation-timing-function:cubic-bezier(0.215,0.61,0.355,1);animation-timing-function:cubic-bezier(0.215,0.61,0.355,1)}0%{opacity:0;-webkit-transform:translate3d(3000px,0,0);transform:translate3d(3000px,0,0)}60%{opacity:1;-webkit-transform:translate3d(-25px,0,0);transform:translate3d(-25px,0,0)}75%{-webkit-transform:translate3d(10px,0,0);transform:translate3d(10px,0,0)}90%{-webkit-transform:translate3d(-5px,0,0);transform:translate3d(-5px,0,0)}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}@keyframes bounceInRight{0%,60%,75%,90%,to{-webkit-animation-timing-function:cubic-bezier(0.215,0.61,0.355,1);animation-timing-function:cubic-bezier(0.215,0.61,0.355,1)}0%{opacity:0;-webkit-transform:translate3d(3000px,0,0);transform:translate3d(3000px,0,0)}60%{opacity:1;-webkit-transform:translate3d(-25px,0,0);transform:translate3d(-25px,0,0)}75%{-webkit-transform:translate3d(10px,0,0);transform:translate3d(10px,0,0)}90%{-webkit-transform:translate3d(-5px,0,0);transform:translate3d(-5px,0,0)}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}.bounceInRight{-webkit-animation-name:bounceInRight;animation-name:bounceInRight}@-webkit-keyframes bounceOutRight{20%{opacity:1;-webkit-transform:translate3d(-20px,0,0);transform:translate3d(-20px,0,0)}to{opacity:0;-webkit-transform:translate3d(2000px,0,0);transform:translate3d(2000px,0,0)}}@keyframes bounceOutRight{20%{opacity:1;-webkit-transform:translate3d(-20px,0,0);transform:translate3d(-20px,0,0)}to{opacity:0;-webkit-transform:translate3d(2000px,0,0);transform:translate3d(2000px,0,0)}}.bounceOutRight{-webkit-animation-name:bounceOutRight;animation-name:bounceOutRight}@-webkit-keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fadeIn{-webkit-animation-name:fadeIn;animation-name:fadeIn}@-webkit-keyframes slideInUp{0%{-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0);visibility:visible}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}@keyframes slideInUp{0%{-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0);visibility:visible}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}.slideInUp{-webkit-animation-name:slideInUp;animation-name:slideInUp}@-webkit-keyframes slideOutDown{0%{-webkit-transform:translateZ(0);transform:translateZ(0)}to{visibility:hidden;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}}@keyframes slideOutDown{0%{-webkit-transform:translateZ(0);transform:translateZ(0)}to{visibility:hidden;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}}.slideOutDown{-webkit-animation-name:slideOutDown;animation-name:slideOutDown}.animated{-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-fill-mode:both;animation-fill-mode:both}.animated.infinite{-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite}.animated.delay-1s{-webkit-animation-delay:1s;animation-delay:1s}.animated.delay-2s{-webkit-animation-delay:2s;animation-delay:2s}.animated.delay-3s{-webkit-animation-delay:3s;animation-delay:3s}.animated.delay-4s{-webkit-animation-delay:4s;animation-delay:4s}.animated.delay-5s{-webkit-animation-delay:5s;animation-delay:5s}.animated.fast{-webkit-animation-duration:.8s;animation-duration:.8s}.animated.faster{-webkit-animation-duration:.5s;animation-duration:.5s}.animated.slow{-webkit-animation-duration:2s;animation-duration:2s}.animated.slower{-webkit-animation-duration:3s;animation-duration:3s}@media(prefers-reduced-motion){.animated{-webkit-animation:unset!important;animation:unset!important;-webkit-transition:none!important;transition:none!important}}::-webkit-scrollbar{width:8px;height:8px;background:#2c3e50}::-webkit-scrollbar-thumb{background:#888}::-webkit-scrollbar-thumb:hover{background:#c6cddb}html{background:#494f5c;line-height:1.6;letter-spacing:.06em}body,button,input,select,textarea{color:#c6cddb;font-family:trebuchet ms,Verdana,verdana ref,segoe ui,Candara,lucida grande,lucida sans unicode,lucida sans,Tahoma,sans-serif}pre,code,pre tt{font-family:Consolas,andale mono wt,andale mono,Menlo,Monaco,lucida console,lucida sans typewriter,dejavu sans mono,bitstream vera sans mono,liberation mono,nimbus mono l,courier new,Courier,yahei consolas hybrid,monospace,segoe ui emoji,pingfang sc,microsoft yahei}pre{max-height:40em;padding:.7em 1.1em;overflow:auto;font-size:.9em;line-height:1.5;letter-spacing:normal;white-space:pre-wrap;word-wrap:break-word;color:#eee;background:#2c3e50;border-radius:4px}pre code{padding:0;margin:0;background:#2c3e50}code{color:#eee;background:#7d828a;border-radius:3px;padding:0 3px;margin:0 4px;word-break:break-all;letter-spacing:normal}blockquote{border-left:.25em solid;margin:1em;padding:0 1em;font-style:italic}blockquote cite{font-weight:700;font-style:normal}blockquote cite::before{content:"—— "}a{color:#c6cddb;text-decoration:none;border:none;Line truncated
+* Copyright (c) 2018 Daniel Eden*/@-webkit-keyframes bounceInRight{0%,60%,75%,90%,to{-webkit-animation-timing-function:cubic-bezier(0.215,0.61,0.355,1);animation-timing-function:cubic-bezier(0.215,0.61,0.355,1)}0%{opacity:0;-webkit-transform:translate3d(3000px,0,0);transform:translate3d(3000px,0,0)}60%{opacity:1;-webkit-transform:translate3d(-25px,0,0);transform:translate3d(-25px,0,0)}75%{-webkit-transform:translate3d(10px,0,0);transform:translate3d(10px,0,0)}90%{-webkit-transform:translate3d(-5px,0,0);transform:translate3d(-5px,0,0)}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}@keyframes bounceInRight{0%,60%,75%,90%,to{-webkit-animation-timing-function:cubic-bezier(0.215,0.61,0.355,1);animation-timing-function:cubic-bezier(0.215,0.61,0.355,1)}0%{opacity:0;-webkit-transform:translate3d(3000px,0,0);transform:translate3d(3000px,0,0)}60%{opacity:1;-webkit-transform:translate3d(-25px,0,0);transform:translate3d(-25px,0,0)}75%{-webkit-transform:translate3d(10px,0,0);transform:translate3d(10px,0,0)}90%{-webkit-transform:translate3d(-5px,0,0);transform:translate3d(-5px,0,0)}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}.bounceInRight{-webkit-animation-name:bounceInRight;animation-name:bounceInRight}@-webkit-keyframes bounceOutRight{20%{opacity:1;-webkit-transform:translate3d(-20px,0,0);transform:translate3d(-20px,0,0)}to{opacity:0;-webkit-transform:translate3d(2000px,0,0);transform:translate3d(2000px,0,0)}}@keyframes bounceOutRight{20%{opacity:1;-webkit-transform:translate3d(-20px,0,0);transform:translate3d(-20px,0,0)}to{opacity:0;-webkit-transform:translate3d(2000px,0,0);transform:translate3d(2000px,0,0)}}.bounceOutRight{-webkit-animation-name:bounceOutRight;animation-name:bounceOutRight}@-webkit-keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fadeIn{-webkit-animation-name:fadeIn;animation-name:fadeIn}@-webkit-keyframes slideInUp{0%{-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0);visibility:visible}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}@keyframes slideInUp{0%{-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0);visibility:visible}to{-webkit-transform:translateZ(0);transform:translateZ(0)}}.slideInUp{-webkit-animation-name:slideInUp;animation-name:slideInUp}@-webkit-keyframes slideOutDown{0%{-webkit-transform:translateZ(0);transform:translateZ(0)}to{visibility:hidden;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}}@keyframes slideOutDown{0%{-webkit-transform:translateZ(0);transform:translateZ(0)}to{visibility:hidden;-webkit-transform:translate3d(0,100%,0);transform:translate3d(0,100%,0)}}.slideOutDown{-webkit-animation-name:slideOutDown;animation-name:slideOutDown}.animated{-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-fill-mode:both;animation-fill-mode:both}.animated.infinite{-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite}.animated.delay-1s{-webkit-animation-delay:1s;animation-delay:1s}.animated.delay-2s{-webkit-animation-delay:2s;animation-delay:2s}.animated.delay-3s{-webkit-animation-delay:3s;animation-delay:3s}.animated.delay-4s{-webkit-animation-delay:4s;animation-delay:4s}.animated.delay-5s{-webkit-animation-delay:5s;animation-delay:5s}.animated.fast{-webkit-animation-duration:.8s;animation-duration:.8s}.animated.faster{-webkit-animation-duration:.5s;animation-duration:.5s}.animated.slow{-webkit-animation-duration:2s;animation-duration:2s}.animated.slower{-webkit-animation-duration:3s;animation-duration:3s}@media(prefers-reduced-motion){.animated{-webkit-animation:unset!important;animation:unset!important;-webkit-transition:none!important;transition:none!important}}::-webkit-scrollbar{width:8px;height:8px;background:#2c3e50}::-webkit-scrollbar-thumb{background:#888}::-webkit-scrollbar-thumb:hover{background:#c6cddb}html{background:#494f5c;line-height:1.6;letter-spacing:.06em;scroll-behavior:smooth}body,button,input,select,textarea{color:#c6cddb;font-family:trebuchet ms,Verdana,verdana ref,segoe ui,Candara,lucida grande,lucida sans unicode,lucida sans,Tahoma,sans-serif}pre,code,pre tt{font-family:Consolas,andale mono wt,andale mono,Menlo,Monaco,lucida console,lucida sans typewriter,dejavu sans mono,bitstream vera sans mono,liberation mono,nimbus mono l,courier new,Courier,yahei consolas hybrid,monospace,segoe ui emoji,pingfang sc,microsoft yahei}pre{max-height:40em;padding:.7em 1.1em;overflow:auto;font-size:.9em;line-height:1.5;letter-spacing:normal;white-space:pre-wrap;word-wrap:break-word;color:#eee;background:#2c3e50;border-radius:4px}pre code{padding:0;margin:0;background:#2c3e50}code{color:#eee;background:#7d828a;border-radius:3px;padding:0 3px;margin:0 4px;word-break:break-all;letter-spacing:normal}blockquote{border-left:.25em solid;margin:1em;padding:0 1em;font-style:italic}blockquote cite{font-weight:700;font-style:normal}blockquote cite::before{content:"—— "}a{color:#c6cddb;text-decorLine truncated

resources/_gen/assets/scss/scss/style.scss_c16d144eee185fbddd582cd5e25a4fae.json

@@ -1 +1 @@
-{"Target":"css/style.min.9a30741782203507f3d35fe9cefabad487c72fc82dfbdf59121759fc2fa52f92.css","MediaType":"text/css","Data":{"Integrity":"sha256-mjB0F4IgNQfz01/pzvq61IfHL8gt+99ZEhdZ/C+lL5I="}}
+{"Target":"css/style.min.bf17d429527cc9978ec99e8d5e3a5319fb29fb7f783e39f2fbe1260fabfbb57c.css","MediaType":"text/css","Data":{"Integrity":"sha256-vxfUKVJ8yZeOyZ6NXjpTGfsp+394Pjny++EmD6v7tXw="}}