diff --git a/index.html b/index.html
index 470591e..b01c0b5 100644
--- a/index.html
+++ b/index.html
@@ -41,28 +41,28 @@
           <span id="universe-viewer" class="ml-4 text-2xl text-white">Topos</span>
 
         </a>
-        <nav class="py-0 flex flex-wrap items-center text-base absolute right-0">
-         <a id="play-button-1" class="mr-5">
+        <nav class="py-2 flex flex-wrap items-center text-base absolute right-0">
+         <a id="play-button-1" class="hover:bg-gray-800 px-2 py-2 rounded-lg">
             <svg class="w-8 h-8" fill="currentColor" viewBox="0 0 14 16">
               <path d="M0 .984v14.032a1 1 0 0 0 1.506.845l12.006-7.016a.974.974 0 0 0 0-1.69L1.506.139A1 1 0 0 0 0 .984Z"/>
             </svg>
           </a>
-          <a id="pause-button-1" class="mr-5 hover:text-gray-900">
+          <a id="pause-button-1" class="mr-2 hover:text-gray-900 hover:bg-gray-800 px-2 py-2 rounded-lg">
             <svg class="fill-orange-300 w-8 h-8 text-gray-800 text-white" fill="currentColor" viewBox="0 0 20 20">
               <path d="M10 .5a9.5 9.5 0 1 0 9.5 9.5A9.51 9.51 0 0 0 10 .5ZM9 13a1 1 0 0 1-2 0V7a1 1 0 0 1 2 0v6Zm4 0a1 1 0 0 1-2 0V7a1 1 0 0 1 2 0v6Z"/>
             </svg>
           </a>
-          <a id="stop-button-1" class="mr-5 hover:text-gray-900">
+          <a id="stop-button-1" class="mr-2 hover:text-gray-900 hover:bg-gray-800 px-2 py-2 rounded-lg">
             <svg class="w-8 h-8 text-gray-800 text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 12 16">
               <path d="M10.819.4a1.974 1.974 0 0 0-2.147.33l-6.5 5.773A2.014 2.014 0 0 0 2 6.7V1a1 1 0 0 0-2 0v14a1 1 0 1 0 2 0V9.3c.055.068.114.133.177.194l6.5 5.773a1.982 1.982 0 0 0 2.147.33A1.977 1.977 0 0 0 12 13.773V2.227A1.977 1.977 0 0 0 10.819.4Z"/>
             </svg>
           </a>
-          <a id="clear-button-1" class="mr-5 hover:text-gray-900">
+          <a id="clear-button-1" class="mr-2 hover:text-gray-900 hover:bg-gray-800 px-2 py-2 rounded-lg">
             <svg class="w-8 h-8 text-gray-800 text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 17 20">
               <path d="M7.958 19.393a7.7 7.7 0 0 1-6.715-3.439c-2.868-4.832 0-9.376.944-10.654l.091-.122a3.286 3.286 0 0 0 .765-3.288A1 1 0 0 1 4.6.8c.133.1.313.212.525.347A10.451 10.451 0 0 1 10.6 9.3c.5-1.06.772-2.213.8-3.385a1 1 0 0 1 1.592-.758c1.636 1.205 4.638 6.081 2.019 10.441a8.177 8.177 0 0 1-7.053 3.795Z"/>
             </svg>
           </a>
-          <a id="doc-button-1" class="mr-5 hover:text-gray-900">
+          <a id="doc-button-1" class="mr-2 hover:text-gray-900 hover:bg-gray-800 px-2 py-2 rounded-lg">
             <svg class="w-8 h-8 text-gray-800 dark:text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 20 18">
               <path d="M9 1.334C7.06.594 1.646-.84.293.653a1.158 1.158 0 0 0-.293.77v13.973c0 .193.046.383.134.55.088.167.214.306.366.403a.932.932 0 0 0 .5.147c.176 0 .348-.05.5-.147 1.059-.32 6.265.851 7.5 1.65V1.334ZM19.707.653C18.353-.84 12.94.593 11 1.333V18c1.234-.799 6.436-1.968 7.5-1.65a.931.931 0 0 0 .5.147.931.931 0 0 0 .5-.148c.152-.096.279-.235.366-.403.088-.167.134-.357.134-.55V1.423a1.158 1.158 0 0 0-.293-.77Z"/>
             </svg>
@@ -214,25 +214,25 @@
 					dark:border-gray-700"
 				>
         <nav class="flex flex-col space-y-6">
-            <a id="local-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="local-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-orange-300" fill="currentColor" viewBox="0 0 20 20">
                 <path d="M10 15a5 5 0 1 0 0-10 5 5 0 0 0 0 10Zm0-11a1 1 0 0 0 1-1V1a1 1 0 0 0-2 0v2a1 1 0 0 0 1 1Zm0 12a1 1 0 0 0-1 1v2a1 1 0 1 0 2 0v-2a1 1 0 0 0-1-1ZM4.343 5.757a1 1 0 0 0 1.414-1.414L4.343 2.929a1 1 0 0 0-1.414 1.414l1.414 1.414Zm11.314 8.486a1 1 0 0 0-1.414 1.414l1.414 1.414a1 1 0 0 0 1.414-1.414l-1.414-1.414ZM4 10a1 1 0 0 0-1-1H1a1 1 0 0 0 0 2h2a1 1 0 0 0 1-1Zm15-1h-2a1 1 0 1 0 0 2h2a1 1 0 0 0 0-2ZM4.343 14.243l-1.414 1.414a1 1 0 1 0 1.414 1.414l1.414-1.414a1 1 0 0 0-1.414-1.414ZM14.95 6.05a1 1 0 0 0 .707-.293l1.414-1.414a1 1 0 1 0-1.414-1.414l-1.414 1.414a1 1 0 0 0 .707 1.707Z"/>
               </svg>
             </a>
           
-            <a id="global-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="global-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-white" fill="currentColor" viewBox="0 0 18 20">
                 <path d="M17.8 13.75a1 1 0 0 0-.859-.5A7.488 7.488 0 0 1 10.52 2a1 1 0 0 0 0-.969A1.035 1.035 0 0 0 9.687.5h-.113a9.5 9.5 0 1 0 8.222 14.247 1 1 0 0 0 .004-.997Z"/>
               </svg>
             </a>
           
-            <a id="init-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="init-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 bg-gray-800">
               <svg class="w-8 h-8 text-white " fill="none" viewBox="0 0 21 20">
                 <path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6.487 1.746c0 4.192 3.592 1.66 4.592 5.754 0 .828 1 1.5 2 1.5s2-.672 2-1.5a1.5 1.5 0 0 1 1.5-1.5h1.5m-16.02.471c4.02 2.248 1.776 4.216 4.878 5.645C10.18 13.61 9 19 9 19m9.366-6h-2.287a3 3 0 0 0-3 3v2m6-8a9 9 0 1 1-18 0 9 9 0 0 1 18 0Z"/>
               </svg>
             </a>
 
-            <a id="note-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="note-button" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-white" fill="currentColor" viewBox="0 0 16 20">
                 <path d="M16 14V2a2 2 0 0 0-2-2H2a2 2 0 0 0-2 2v15a3 3 0 0 0 3 3h12a1 1 0 0 0 0-2h-1v-2a2 2 0 0 0 2-2ZM4 2h2v12H4V2Zm8 16H3a1 1 0 0 1 0-2h9v2Z"/>
               </svg>
@@ -240,31 +240,31 @@
 
             <!-- Other buttons -->
          
-            <a id="play-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="play-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-white block xl:hidden" fill="currentColor" viewBox="0 0 14 16">
                 <path d="M0 .984v14.032a1 1 0 0 0 1.506.845l12.006-7.016a.974.974 0 0 0 0-1.69L1.506.139A1 1 0 0 0 0 .984Z"/>
               </svg>
             </a>
         
-            <a id="pause-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="pause-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="fill-orange-300 w-8 h-8 block xl:hidden" fill="currentColor" viewBox="0 0 20 20">
                 <path d="M10 .5a9.5 9.5 0 1 0 9.5 9.5A9.51 9.51 0 0 0 10 .5ZM9 13a1 1 0 0 1-2 0V7a1 1 0 0 1 2 0v6Zm4 0a1 1 0 0 1-2 0V7a1 1 0 0 1 2 0v6Z"/>
               </svg>
             </a>
        
-            <a id="stop-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="stop-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-gray-800 dark:text-white block xl:hidden" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 12 16">
                 <path d="M10.819.4a1.974 1.974 0 0 0-2.147.33l-6.5 5.773A2.014 2.014 0 0 0 2 6.7V1a1 1 0 0 0-2 0v14a1 1 0 1 0 2 0V9.3c.055.068.114.133.177.194l6.5 5.773a1.982 1.982 0 0 0 2.147.33A1.977 1.977 0 0 0 12 13.773V2.227A1.977 1.977 0 0 0 10.819.4Z"/>
               </svg>
             </a>
        
-            <a id="clear-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:hover:bg-gray-800 hover:bg-gray-100">
+            <a id="clear-button-2" class="pl-2 p-1.5 text-gray-700 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 hover:bg-gray-800">
               <svg class="w-8 h-8 text-white block xl:hidden" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 17 20">
               <path d="M7.958 19.393a7.7 7.7 0 0 1-6.715-3.439c-2.868-4.832 0-9.376.944-10.654l.091-.122a3.286 3.286 0 0 0 .765-3.288A1 1 0 0 1 4.6.8c.133.1.313.212.525.347A10.451 10.451 0 0 1 10.6 9.3c.5-1.06.772-2.213.8-3.385a1 1 0 0 1 1.592-.758c1.636 1.205 4.638 6.081 2.019 10.441a8.177 8.177 0 0 1-7.053 3.795Z"/>
               </svg>
             </a>
 
-            <a id="settings-button" class="p-2 text-gray-700 ml-1 absolute bottom-2 focus:outline-nones transition-colors duration-200 rounded-lg dark:text-gray-200 dark:bg-gray-800 bg-gray-100">
+            <a id="settings-button" class="p-2 text-gray-700 ml-1 absolute bottom-2 focus:outline-nones transition-colors duration-200 rounded-lg text-gray-200 bg-gray-800">
               <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-6 h-6">
               <path stroke-linecap="round" stroke-linejoin="round" d="M10.343 3.94c.09-.542.56-.94 1.11-.94h1.093c.55 0 1.02.398 1.11.94l.149.894c.07.424.384.764.78.93.398.164.855.142 1.205-.108l.737-.527a1.125 1.125 0 011.45.12l.773.774c.39.389.44 1.002.12 1.45l-.527.737c-.25.35-.272.806-.107 1.204.165.397.505.71.93.78l.893.15c.543.09.94.56.94 1.109v1.094c0 .55-.397 1.02-.94 1.11l-.893.149c-.425.07-.765.383-.93.78-.165.398-.143.854.107 1.204l.527.738c.32.447.269 1.06-.12 1.45l-.774.773a1.125 1.125 0 01-1.449.12l-.738-.527c-.35-.25-.806-.272-1.203-.107-.397.165-.71.505-.781.929l-.149.894c-.09.542-.56.94-1.11.94h-1.094c-.55 0-1.019-.398-1.11-.94l-.148-.894c-.071-.424-.384-.764-.781-.93-.398-.164-.854-.142-1.204.108l-.738.527c-.447.32-1.06.269-1.45-.12l-.773-.774a1.125 1.125 0 01-.12-1.45l.527-.737c.25-.35.273-.806.108-1.204-.165-.397-.505-.71-.93-.78l-.894-.15c-.542-.09-.94-.56-.94-1.109v-1.094c0-.55.398-1.02.94-1.11l.894-.149c.424-.07.765-.383.93-.78.165-.398.143-.854-.107-1.204l-.527-.738a1.125 1.125 0 01.12-1.45l.773-.773a1.125 1.125 0 011.45-.12l.737.527c.35.25.807.272 1.204.107.397-.165.71-.505.78-.929l.15-.894z" />
               <path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />