Improve styles of the code snippets

_prompts/translate-shell.md

@@ -31,6 +31,11 @@ This widget allows quickly translate words or phrases without opening a browser
 1. Add a shortcut to run translate prompt:
 
     ```lua
-    awful.key({ modkey }, "c", function() translate.show_translate_prompt() end, { description = "run translate prompt", group = "launcher" }),
+    awful.key({ modkey }, "c",
+              function()
+                  translate.show_translate_prompt()
+              end,
+              { description = "run translate prompt", group = "launcher" }
+    ),
     ```
 

assets/css/style.scss

@@ -105,6 +105,15 @@ footer {
   ul > li {
     list-style-type: disc;
   }
+
+  ul {
+    padding-left: 40px;
+  }
+
+  .highlighter-rouge {
+    width: 80%;
+    margin: auto;
+  }
 }
 
 .widget {
@@ -116,7 +125,6 @@ footer {
     height: 30px;
     margin-bottom: -3px;
   }
-
   .materialcss-icon {
     height: 22px;
     padding: 0 4px;
@@ -124,7 +132,6 @@ footer {
   .fa-spotify {
     padding: 0 6px;
   }
-
   .cprght {
     padding-top: 12px;
   }