JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<div role="navigation" class="navbar navbar-default navbar-fixed-top">
    <div class="container">
        <div class="navbar-header">
            <a href="/" class="navbar-brand">Website</a>
        </div>
    </div>
</div>
<div class="container">
    <div id="div1" class="anchor">
        <div>
            Div 1
        </div>
        <div id="div1-1" class="anchor panel panel-default">
            <div class="panel-heading">
                Div 1-1
            </div>
            <div class="panel-body panel-collapse collapse in">
                ...
            </div>
            <div class="panel-footer">
                ...
            </div>
        </div>
        <div id="div1-2" class="anchor panel panel-default">
            <div class="panel-heading">
                Div 1-2
            </div>
            <div class="panel-body panel-collapse collapse in">
                ...
            </div>
            <div class="panel-footer">
                ...
            </div>
        </div>
        <div id="div1-3" class="anchor panel panel-default">
            <div class="panel-heading">
                Div 1-3
            </div>
            <div class="panel-body panel-collapse collapse in">
                ...
            </div>
            <div class="panel-footer">
                ...
            </div>
        </div>
    </div>
    <div id="div2" class="anchor">
        <div class="levels-world-heading">
            Div 2
        </div>
        <div id="div2-1" class="anchor panel panel-default">
            <div class="panel-heading">
                Div 2-1
            </div>
            <div class="panel-body panel-collapse collapse in">
                ...
            </div>
            <div class="panel-footer">
                ...
            </div>
        </div>
        <div id="div2-2" class="anchor panel panel-default">
            <div...

CSS

body {
    padding-top: 60px;
}
.anchor:before {
    content: ' ';
    margin-top: -60px;
    height: 60px;
    display: block;
    visibility: hidden;
}