$(document).ready(function() {
$("ul.nav-item li").click(function() {
var selector = $(this).attr("data-id");
var fix = 0;
var nav = $(".nav-row").outerHeight(true);
$('html,body').animate({
scrollTop: $("#" + selector).offset().top - nav - fix
}, 'slow');
});
});
body {
margin: 0;
padding: 0;
}
.container {
border: 1px solid red;
}
.nav-row {
position: fixed;
width: 100%;
background-color: #ffffff;
margin: 0;
}
.contents {
padding-top: 200px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<div class="nav-row">
<ul class="nav-item">
<li class="nav-leistungen" data-id="content1">Leistungen</li>
<li class="nav-philosophie" data-id="content2">Philosophie</li>
<li class="nav-kontakt" data-id="content3">Kontakt</li>
<li class="nav-xxxx" data-id="content4">pppppppppppppp</li>
</ul>
</div>
<div class="contents">
<div class="container" id="content1">
<div class="heading-line">
<span>content 1</span>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Culpa nulla corporis odio totam magni ea consequatur. Vel quidem, doloremque quia vero reprehenderit dolorum qui atque, magni itaque, esse deserunt. Deserunt.</p>
</div>
</div>
<div class="container" id="content2">
<div class="heading-line">
<span>content 2</span>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Culpa nulla corporis odio totam magni ea consequatur. Vel quidem, doloremque quia vero reprehenderit dolorum qui atque, magni itaque, esse deserunt. Deserunt.</p>
</div>
</div>
<div class="container" id="content3">
<div class="heading-line">
<span>content 3</span>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Culpa nulla corporis odio totam magni ea consequatur. Vel quidem, doloremque quia vero reprehenderit dolorum qui atque, magni itaque, esse deserunt. Deserunt.</p>
</div>
</div>
<div class="container" id="content4">
<div class="heading-line">
<span>content 4</span>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Culpa nulla corporis odio totam magni ea consequatur. Vel quidem, doloremque quia vero reprehenderit dolorum qui atque, magni itaque, esse deserunt. Deserunt.</p>
</div>
</div>
</div>
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