
Menüyü yukarı sabitleyip yatay olarak uzatmam lazım. Örnek bir siteden menü görseli atıyorum;

menüyü bu hale getirmem lazım.
Header ve css kodlarını sizinle paylaşıyorum;
<div class="page-wrapper">
<!-- LOADING AREA START ===== -->
<div class="loading-area">
<div class="loading-box"></div>
<div class="loading-pic">
<div class="cssload-loader">Lütfen Bekleyin</div>
</div>
</div>
<!-- LOADING AREA END ====== -->
<style>
.dropdown-toggle::after {
display: inline-block;
width: 0;
height: 0;
margin-left: .1em;
vertical-align: .1em;
border-top: .0em solid;
border-right: .0em solid transparent;
border-bottom: 0;
border-left: .0em solid transparent;
}
</style>
<!-- Main Header -->
<header class="main-header header-style-three">
<!--Header Lower-->
<div class="header-lower">
<div class="auto-container">
<div class="inner-container clearfix">
<div class="ofm-logo logo-box">
<div class="logo"><a href="index.php"><img src="<?php echo $site_logo; ?>" style="max-width: 200px;" alt="<?php echo $site_title; ?>"></a></div>
</div>
<div class="nav-outer pull-right clearfix">
<!-- Mobile Navigation Toggler -->
<div class="mobile-nav-toggler"><span class="icon flaticon-menu-2"></span></div>
<!-- Main Menu -->
<nav class="main-menu show navbar-expand-md">
<div class="navbar-header">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="navbar-collapse collapse clearfix" id="navbarSupportedContent">
<ul class="navigation clearfix">
<li class="current"><a href="index.php" style="font-size: 20px;"><i class="fa fa-home"></i></a></li>
<?php echo sitemenu($array); ?>
</ul>
</div>
</nav>
<!-- Main Menu End-->
<!-- Options Box -->
<div class="options-box clearfix">
<!-- Cart Box -->
<div class="cart-box">
<div class="dropdown">
<?php
if ($dildurum_sorgu_kontrol == 1){ }else{ ?>
<li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" style="margin-right: 20px;">
<img src="upload/bayraklar/<?php echo $simge2; ?>" alt="language"> <i class="ofm-dil"><?php echo $tarihdurum; ?></i> </a>
<ul class="dropdown-menu" style="max-width: 140px;padding: .1rem 0.1rem;top:unset; background:#fff;">
<?php foreach ($dillersorgu as $dilsorgu) {
if ($ayarlardegisken["sitelink"] == "0"){
?>
<li> <a class="dropdown-item" style="color: #000;!important;" href="./?bosalt=bosalt&dilsecildi=<?php echo $dilsorgu['dilid']; ?>">
<img src="upload/bayraklar/<?php echo $dilsorgu['bayrak']; ?>"> <?php echo $dilsorgu['baslik']; ?>
</a> </li>
<?php } else { ?>
<li>
<a class="dropdown-item" style="color: #000;!important;" href="/<?php echo $dilsorgu['dilid']; ?>">
<img src="upload/bayraklar/<?php echo $dilsorgu['bayrak']; ?>"> <?php echo $dilsorgu['baslik']; ?>
</a>
</li>
<?php } } ?>
</ul>
</li> <!-- End Header Language -->
<?php
}
?>
</div>
</div>
<!-- Button Box -->
<div class="button-box">
<a href="<?php echo $hlink['iletisim']; ?>" class="theme-btn btn-style-six"><span class="txt"><?php echo $hdil["_hizliiletisim"]; ?></span></a>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- End Header Lower -->
<!-- Header Info Box -->
<div class="header-info-box">
<div class="auto-container">
<div class="box-inner">
<!-- Info List -->
<ul class="info-list">
<li><a href="mailto:<?php echo $iletisim["eposta"]; ?>"><span class="icon fa fa-envelope"></span> <?php echo $iletisim["eposta"]; ?></a></li>
<li><a href="tel:<?php echo $iletisim["telefon"]; ?>"><span class="icon fa fa-phone"></span> <?php echo $iletisim["telefon"]; ?></a></li>
<li><a href="<?php echo $hlink['iletisim']; ?>"><span class="icon fa fa-clock-o"></span> <?php echo $hdil["_hici"]; ?>: <?php echo $iletisim["haftaici"]; ?> <?php echo $hdil["_hpazar"]; ?>: <?php echo $iletisim['pazar']; ?></a></li>
</ul>
</div>
</div>
</div>
<!-- Mobile Menu -->
<div class="mobile-menu">
<div class="menu-backdrop"></div>
<div class="close-btn"><span class="icon flaticon-multiply"></span></div>
<nav class="menu-box">
<div class="nav-logo"><a href="index.php"><img src="<?php echo $site_logo; ?>" alt="<?php echo $site_title; ?>"></a></div>
<div class="menu-outer">
<!--Here Menu Will Come Automatically Via Javascript / Same Menu as in Header-->
</div>
</nav>
</div><!-- End Mobile Menu -->
</header>
<!-- End Main Header --> css
.dd { position: relative; display: block; margin: 0; padding: 0; width: 100%; list-style: none; font-size: 13px; line-height: 20px; }
.dd-list { display: block; position: relative; margin: 0; padding: 0; list-style: none; }
.dd-list .dd-list { padding-left: 30px; }
.dd-collapsed .dd-list { display: none; }
.dd-item,
.dd-empty,
.dd-placeholder { display: block; position: relative; margin: 0; padding: 0; min-height: 20px; font-size: 13px; line-height: 20px; }
.dd-handle { display: block; height: 30px; margin: 5px 0; padding: 5px 10px; color: #333; text-decoration: none; font-weight: bold; border: 1px solid #ccc;
background: #fafafa;
background: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);
background: -moz-linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
-webkit-border-radius: 3px;
border-radius: 3px;
box-sizing: border-box; -moz-box-sizing: border-box;
}
.dd-handle:hover { color: #2ea8e5; background: #fff; }
.dd-item > button { display: block; position: relative; cursor: pointer; float: left; width: 25px; height: 20px; margin: 5px 0; padding: 0; text-indent: 100%; white-space: nowrap; overflow: hidden; border: 0; background: transparent; font-size: 12px; line-height: 1; text-align: center; font-weight: bold; }
.dd-item > button:before { content: '+'; display: block; position: absolute; width: 100%; text-align: center; text-indent: 0; }
.dd-item > button[data-action="collapse"]:before { content: '-'; }
.dd-placeholder,
.dd-empty { margin: 5px 0; padding: 0; min-height: 30px; background: #f2fbff; border: 1px dashed #b6bcbf; box-sizing: border-box; -moz-box-sizing: border-box; }
.dd-empty { border: 1px dashed #bbb; min-height: 100px; background-color: #e5e5e5;
background-image: -webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff),
-webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-image: -moz-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff),
-moz-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-image: linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff),
linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);
background-size: 60px 60px;
background-position: 0 0, 30px 30px;
}
.dd-dragel { position: absolute; pointer-events: none; z-index: 9999; }
.dd-dragel > .dd-item .dd-handle { margin-top: 0; }
.dd-dragel .dd-handle {
-webkit-box-shadow: 2px 4px 6px 0 rgba(0,0,0,.1);
box-shadow: 2px 4px 6px 0 rgba(0,0,0,.1);
}
/**
* Nestable Extras
*/
.nestable-lists { display: block; clear: both; padding: 30px 0; width: 100%; border: 0; border-top: 2px solid #ddd; border-bottom: 2px solid #ddd; }
#nestable-menu { padding: 0; margin: 20px 0; }
#nestable-output,
#nestable2-output { width: 100%; height: 7em; font-size: 0.75em; line-height: 1.333333em; font-family: Consolas, monospace; padding: 5px; box-sizing: border-box; -moz-box-sizing: border-box; }
#nestable2 .dd-handle {
color: #fff;
border: 1px solid #999;
background: #bbb;
background: -webkit-linear-gradient(top, #bbb 0%, #999 100%);
background: -moz-linear-gradient(top, #bbb 0%, #999 100%);
background: linear-gradient(top, #bbb 0%, #999 100%);
}
#nestable2 .dd-handle:hover { background: #bbb; }
#nestable2 .dd-item > button:before { color: #fff; }
@media only screen and (min-width: 700px) {
.dd { float: left; }
.dd + .dd { margin-left: 2%; }
}
.dd-hover > .dd-handle { background: #2ea8e5 !important; }
/**
* Nestable Draggable Handles
*/
.dd3-content { display: block; height: 30px; margin: 5px 0; padding: 5px 10px 5px 40px; color: #333; text-decoration: none; font-weight: bold; border: 1px solid #ccc;
background: #fafafa;
background: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);
background: -moz-linear-gradient(top, #fafafa 0%, #eee 100%);
background: linear-gradient(top, #fafafa 0%, #eee 100%);
-webkit-border-radius: 3px;
border-radius: 3px;
box-sizing: border-box; -moz-box-sizing: border-box;
}
.dd3-content:hover { color: #2ea8e5; background: #fff; }
.dd-dragel > .dd3-item > .dd3-content { margin: 0; }
.dd3-item > button { margin-left: 30px; }
.dd3-handle { position: absolute; margin: 0; left: 0; top: 0; cursor: pointer; width: 30px; text-indent: 100%; white-space: nowrap; overflow: hidden;
border: 1px solid #aaa;
background: #ddd;
background: -webkit-linear-gradient(top, #ddd 0%, #bbb 100%);
background: -moz-linear-gradient(top, #ddd 0%, #bbb 100%);
background: linear-gradient(top, #ddd 0%, #bbb 100%);
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}
.dd3-handle:before { content: '≡'; display: block; position: absolute; left: 0; top: 3px; width: 100%; text-align: center; text-indent: 0; color: #fff; font-size: 20px; font-weight: normal; }
.dd3-handle:hover { background: #ddd; }
#load { height: 100%; width: 100%; }
#load {
position : fixed;
z-index : 99; /* or higher if necessary */
top : 0;
left : 0;
overflow : hidden;
text-indent : 100%;
font-size : 0;
opacity : 0.6;
background : #E0E0E0 url('loading.gif') center no-repeat;
}
.del-button{
cursor:pointer;
text-decoration:none;
}
.edit-button{
cursor:pointer;
text-decoration:none;
}
.span-right{
float:right;
}
#sabit_list{
padding-inline-start: 0px;
}
.degisken {
padding-inline-start: 30px;
}
.degisken .dd3-handle{
position: absolute;
margin: 0;
margin-top: -26px;
left: 15px;
top:unset;
/* top: 0; */
cursor: pointer;
width: 30px;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
}
.degisken .dd-handle {
height: 32px;
}
.degisken li{
color: #fff!important;
background: #8bc34a!important;
}
#sabit_list .asf .dd3-handle{
margin-top: -26px;
left: 54px;
top: unset;
}
#sabit_list .asf .dd-handle {
height: 32px;
}
.asf li a{
float: right;
}
#sabit_list .asf li{background: -webkit-linear-gradient(top, #fafafa 0%, #eee 100%);border-color: #ccc;padding-left: 30px;}
.affix {top:5px;width:100%;max-width: 280px;}
@media (max-width: 419px){
.span-right {
font-size:9px;
}
#list li span {
color: #FFF;
font-size:9px;
}
}