position: fixed
<div class="onoffcanvas is-fixed is-top" id="cft"
<h1>Top Canvas</h1>
<a href="#cft" class="onoffcanvas-toggler" data-toggle=onoffcanvas style="width:100px; height:100px;"></a>
</div>
<div class="onoffcanvas is-fixed is-end" id="cfr">
<h1>Right Canvas</h1>
<a href="#cfr" class="onoffcanvas-toggler" data-toggle=onoffcanvas style="width:100px; height:100px;"></a>
</div>
<div class="onoffcanvas is-fixed is-bottom" id="cfb">
<h1>Bottom Canvas</h1>
<a href="#cfb" class="onoffcanvas-toggler" data-toggle=onoffcanvas style="width:100px; height:100px;"></a>
</div>
<div class="onoffcanvas is-fixed is-end" id="cfl">
<h1>Left Canvas</h1>
<a href="#cfl" class="onoffcanvas-toggler" data-toggle=onoffcanvas style="width:100px; height:100px;"></a>
</div>
<div class="onoffcanvas is-fixed" id="cff">
<a href="#cff" class="onoffcanvas-toggler" data-toggle="onoffcanvas" style="width:200px; height:200px;top: 50%;left: 50%;transform: translate(-50%, -50%);"></a>
</div>
position: absolute
position: absolute
is-open
class to parent
<div id="onoffcanvas1"></div>
<div class="is-open">
<a href="#onoffcanvas1" data-toggle="onoffcanvas" class="onoffcanvas-toggler"></a>
</div>
is-animated
class to
onoffcanvas-toggle
<div id="onoffcanvas2"></div>
<a href="#onoffcanvas2" class="onoffcanvas-toggler is-animated" data-toggle="onoffcanvas"></a>