Fix Card fluid rendering for unlimited items

src/Card.php

@@ -71,15 +71,6 @@ class Card extends View
     /** @var string Default executor class. */
     public $executor = UserAction\ModalExecutor::class;
 
-    /** @var array Columns CSS wide classes */
-    protected $words = [
-        '', 'fluid', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten', 'eleven', 'twelve',
-        'thirteen', 'fourteen', 'fifteen', 'sixteen',
-    ];
-
-    /** @var int The number of buttons */
-    private $btnCount = 0;
-
     protected function init(): void
     {
         parent::init();
@@ -153,6 +144,10 @@ public function getButtonContainer()
     {
         if (!$this->btnContainer) {
             $this->btnContainer = $this->addExtraContent(new View(['ui' => 'buttons']));
+            $this->getButtonContainer()->addClass('wrapping');
+            if ($this->hasFluidButton) {
+                $this->getButtonContainer()->addClass('fluid');
+            }
         }
 
         return $this->btnContainer;
@@ -317,20 +312,11 @@ public function addImage($img)
      */
     public function addButton($seed)
     {
-        if ($this->hasFluidButton && $this->btnCount > 0) {
-            $this->getButtonContainer()->removeClass($this->words[$this->btnCount]);
-        }
-
         if (!is_object($seed)) {
             $seed = Factory::factory([Button::class], $seed);
         }
 
         $btn = $this->getButtonContainer()->add($seed);
-        ++$this->btnCount;
-
-        if ($this->hasFluidButton && $this->btnCount > 0) {
-            $this->getButtonContainer()->addClass($this->words[$this->btnCount]);
-        }
 
         return $btn;
     }