<ul class="nav__list" width="100px" id="filters">
                    <li>
                        <li><button data-filter="*">All Products</button></li>
                        <li><button data-filter=".categorie1">Product1</button></li>
                        <li><button data-filter=".categorie1">Product2</button></li>
                        <li><button data-filter=".categorie2">Product2</button></li>
                        <li><button data-filter=".categorie2">Product3</button></li>
                        <li><button data-filter=".categorie3">Product4</button></li>
                    </li>
                  <ul>

<a href="shop.php?filter=categorie2">Categorie2</a>