Update style and templates

app/templates/admin/groups.forkbb.php

@@ -1,7 +1,7 @@
 @extends ('layouts/admin')
       <section id="fork-grlist" class="f-admin">
         <h2>{!! __('User groups') !!}</h2>
-        <div>
+        <div class="f-adiv">
           <fieldset>
             <p>{!! __('Edit groups info') !!}</p>
             <ol>

app/templates/admin/index.forkbb.php

@@ -1,7 +1,7 @@
 @extends ('layouts/admin')
       <section id="fork-welcome" class="f-admin">
         <h2>{!! __('Forum admin head') !!}</h2>
-        <div>
+        <div class="f-adiv">
           <fieldset>
             <p>{!! __('Welcome to admin') !!}</p>
             <ul>

public/style/ForkBB/style.css

@@ -1081,7 +1081,8 @@ html[lang="ru"] #fork details[open] > summary::after {
   margin-bottom: 1rem;
 }
 
-#forka .f-admin > div {
+#forka .f-admin .f-adiv,
+#forka .f-admin .f-fdiv {
   background-color: #F8F4E3;
   border: 0.0625rem solid #AA7939;
 }