feat(lib): upgrade libs and fix exampleSite bugs

assets/css/_core/_media.scss

@@ -1,4 +1,13 @@
-/* iPads (landscape) ----------- */
+@media only screen and (max-width: 1800px) {
+  .post-warp {
+    max-width: 780px;
+
+    .post-toc {
+      margin-left: 800px;
+    }
+  }
+}
+
 @media only screen and (max-width: 1300px) {
   .post-warp {
     max-width: 560px;
@@ -9,7 +18,6 @@
   }
 }
 
-/* iPads (portrait) ----------- */
 @media only screen and (max-width: 1080px) {
   .navbar {
     .navbar-container {

assets/css/_mermaid/mermaid.scss

@@ -3,3 +3,4 @@
 @import 'gantt';
 @import 'class';
 @import 'git';
+@import 'pie';

assets/css/_mermaid/pie.scss

@@ -0,0 +1,5 @@
+.pieTitleText {
+  text-anchor: middle;
+  font-size: 25px;
+  fill: $taskTextDarkColor;
+}

assets/css/_page/_index.scss

@@ -3,7 +3,7 @@
 .post-warp {
   position: relative;
   width: 100%;
-  max-width: 780px;
+  max-width: 960px;
   margin: 0 auto;
   padding-top: 6rem;
 

assets/css/_page/_post.scss

@@ -55,7 +55,7 @@
   position: absolute;
   width: 240px;
   max-width: 300px;
-  margin-left: 800px;
+  margin-left: 980px;
   padding: .8rem;
   border-left: 1px solid $global-border-color;
   word-wrap: break-word;

assets/css/lib/VERSION

@@ -1,5 +1,5 @@
-fontawesome-free@5.10.1
+fontawesome-free@5.11.2
 gittalk@1.5.0
-katex@0.11.0
+katex@0.11.1
 aplayer@1.10.1
 animate.css@3.7.2