body  { background: #fff8ee;  }

body {    --link-color: black;  }

.container-header { background: #fff8ee;  }

.container-footer {background: #ffebcd; color: #79563b;  }

/*#back-top { position: fixed; }   Pfeil immer sichtbar */

.sidebar-left {
              background: #fff8ee;;
              border: 0.3px 0.3px solid #ffdead;
  	          weight: 10px;
              padding: 20px;
  			  box-shadow: 2px 5px 5px #ffdead ;
   			  border-radius:5px; /* CSS3 */
 		} 

.metismenu-item {   /* Navi oben und Footer */
              margin: 8px;
              border: 0.3px 0.3px solid #ffdead;
  	          weight: 10px;
              padding: 20px;
              box-shadow: 2px 5px 5px #ffdead;
  			  border-radius:5px; /* CSS3 */ }

.page-header  {color: black;}

.com-content-article__body  {margin: 18px; }   /* text im Verkauf*/


<a class="btn btn-success button_buy" href="/index.php/component/jshopping/cart/add?category_id=1&amp;product_id=1">
                    Kaufen               </a>