<div id="search_box">
    <form method="GET" action="search.php">
        <input type="search" placeholder="Пошук..." maxlength="30" class="search">
        <input type="submit" value="Шукати">
    </form>
 </div>

#search_box .search {
    width: 160px;
    padding: 6px 15px 6px 28px;
    background: url(images/search.png) no-repeat 4px;
    border: 1px solid #000000;
}