Умар Мухамедалиев

<ul id="navigation">
                <li><a href="1.html" class="button">1</a></li>
                <li><a href="2.html" class="button">2</a></li>
                <li><a href="3.html" class="button">3</a></li>
            </ul>

.button {
    user-select: none;
    display: block;
    color: inherit;
    text-decoration: none
}