refactor: Children Slider css improved.

src/QUI/Bricks/Controls/Children/Slider.ImageAndText.css

@@ -139,7 +139,7 @@
     background: #f5f5f5;
 }
 
-.quiqqer-bricks-children-slider-child-content a {
+.quiqqer-bricks-children-slider-child-content-button {
     margin-top: auto;
 }
 

src/QUI/Bricks/Controls/Children/Slider.ImageAndText.html

@@ -39,7 +39,8 @@
                             </div>
                             {/if}
 
-                            <a href="{url site=$Child}" title="{$Child->getAttribute('title')|escape:'html'}">
+                            <a href="{url site=$Child}" title="{$Child->getAttribute('title')|escape:'html'}"
+                               class="quiqqer-bricks-children-slider-child-content-button">
                                 {locale group='quiqqer/bricks' var='brick.control.slider.button'}
                             </a>
                         </div>