nd dropdown -->
						</ul>
						<!-- end header nav -->

						<!-- header search -->
						<form class="header__search">
							<input id="search_input_id" class="header__search-input" type="text" placeholder="输入关键字搜索文章...">
							<button id="searchBtn" class="header__search-button" type="button" onclick="beforeSearch()">
								<i class="icon ion-ios-search"></i>
							</button>
						</form>
						<!-- end header search -->
					</div>
				</div>

				<div class="col-5 col-md-3 col