<div class="dropdown is-active">
    <div class="dropdown-trigger">
        <div class="field">
            <p class="control is-expanded has-icons-right">
                <input class="input" type="search" placeholder="Search..."/>
                <span class="icon is-small is-right"><i class="fas fa-search"></i></span>
            </p>
        </div>
    </div>
    <div class="dropdown-menu" id="dropdown-menu" role="menu">
        <div class="dropdown-content">
            <a rel="nofollow" href="#" class="dropdown-item">Dropdown item</a>
            <a rel="nofollow" href="#" class="dropdown-item">Other dropdown item</a>
            <hr class="dropdown-divider">
            <a rel="nofollow" href="#" class="dropdown-item">With a divider</a>
        </div>
    </div>
</div>