Further improve session list

frontend/src/index.css

@@ -41,19 +41,16 @@ form label {
   @apply border-l border-l-slate-500;
 }
 
-.responsive-table th, td {
-  @apply px-4;
-}
-
-@media screen and (max-width: 768px) {
-  .responsive-table th, td,
-  td {
-    @apply px-2;
-  }
-  .responsive-table td:first-child {
-    @apply overflow-hidden text-ellipsis whitespace-nowrap pr-2;
+@layer utilities {
+  .max-w-20char {
     max-width: 20ch;
   }
+  .max-w-35char {
+    max-width: 40ch;
+  }
+  .max-w-40char {
+    max-width: 40ch;
+  }
 }
 
 form input,
@@ -78,12 +75,6 @@ textarea {
   }
 }
 
-@media screen and (max-width: 768px) {
-  .hide-on-small {
-    display: none;
-  }
-}
-
 #button-container button {
   @apply mx-1;
 }