position: sticky

by scurrilus

HTML

<div class="header"><span>This is a header</span></div>
<div class="placeholder">This div holds place</div>
<div>
<div class="slider">This should slide up and then stick.</div>
<div class="placeholder">This div holds place</div>
<div class="placeholder">This div holds place</div>
</div>
<div>
<div class="slider">This should slide up and then stick.</div>
<div class="placeholder">This div holds place</div>
<div class="placeholder">This div holds place</div>
</div>

CSS

html, body {
    margin: 0;
}

body * {
    margin: 20px;
    padding: 20px;
}

.header {
    margin: 0;
    padding: 20px;
    background: #000;
}

.header span {
    display: block;
    color: #fff;
    margin: 0 auto;
    text-align: center;
    padding: 0;
}

.placeholder {
    border: 1px solid black;
    margin: 0 auto;
    text-align: center;
    height: 300px;
}

.slider {
    background: #006264;
    color: white;
    font-weight: bold;
    margin: 0 auto;
    position: sticky;
    top: 0px;
}