style: fix category icon spacing when --minify used

Fix #1219

exampleSite/content/post/getting-started/index.md

@@ -6,7 +6,8 @@ authors:
 - admin
 tags:
 - Academic
-categories: []
+categories:
+- Demo
 date: "2016-04-20T00:00:00Z"
 lastmod: "2019-04-17T00:00:00Z"
 featured: false

exampleSite/content/post/writing-technical-content/index.md

@@ -41,7 +41,7 @@ Academic supports a Markdown extension for $\LaTeX$ math. You can enable this fe
 
 To render *inline* or *block* math, wrap your LaTeX math with `$$...$$`.
 
-Example math block:
+Example **math block**:
 
 ```tex
 $$\gamma_{n} = \frac{ 
@@ -54,7 +54,19 @@ renders as
 
 $$\gamma_{n} = \frac{ \left | \left (\mathbf x_{n} - \mathbf x_{n-1} \right )^T \left [\nabla F (\mathbf x_{n}) - \nabla F (\mathbf x_{n-1}) \right ] \right |}{\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2}$$
 
-Example inline math `$$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$` renders as $$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$ .
+Example **inline math** `$$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$` renders as $$\left \|\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right \|^2$$ .
+
+Example **multi-line math** using the `\\` math linebreak:
+
+```tex
+$$f(k;p_0^*) = \begin{cases} p_0^* & \text{if }k=1, \\
+1-p_0^* & \text {if }k=0.\end{cases}$$
+```
+
+renders as
+
+$$f(k;p_0^*) = \begin{cases} p_0^* & \text{if }k=1, \\
+1-p_0^* & \text {if }k=0.\end{cases}$$
 
 ### Diagrams
 

layouts/partials/page_metadata.html

@@ -61,8 +61,8 @@
   {{ with $page.Param $taxonomy }}
   <span class="middot-divider"></span>
   <span class="article-categories">
-    <i class="fas fa-folder"></i>
-    {{ range $index, $value := . -}}
+    <i class="fas fa-folder mr-1"></i>
+    {{- range $index, $value := . -}}
       {{- if gt $index 0 }}, {{ end -}}
       <a href="{{ (site.GetPage (printf "/%s/%s" $taxonomy (. | urlize))).RelPermalink }}">{{ . }}</a>
     {{- end -}}