DedeV6/src/theme/plus/plus_header.htm

<div class="container header">
    <header class="pt-3">
        <div class="row">
            <div class="col-12 col-sm-6 logo"><a href="<?php echo $cfg_cmsurl; ?>/"><img src="<?php echo $cfg_cmsurl; ?>/static/web/img/logo.gif" alt="<?php echo $cfg_webname;?>" srcset=""></a></div>
            <div class="col-12 col-sm-6 d-flex justify-content-end">
                <div class="input-group py-3">
                    <form class="search" name="formsearch" action="<?php echo $cfg_cmsurl; ?>/apps/search.php">
                        <input type="hidden" name="kwtype" value="0">
                        <input name="q" type="text" class="form-control" placeholder="输入搜索关键词">
                        <div class="input-group-append">
                            <button class="btn btn-success btn-sm" type="submit">
                                <i class="fa fa-search"></i> 
                            </button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </header>
</div>
<!-- /.header -->