How to Create Before & After Slider in Oxygen

Make sure both of your photos are the same size, and proportional. So the effect is more appealing.
To get you started, I've uploaded the exact images I used in the demo, so grab them from here before - after

Add a code block, in the HTML section add this code:

<script type="text/javascript" src="https://cdn.jotfor.ms/before-after/before-after.min.js"> </script>

Then move to the JavaScript section, and add this jQuery code:

jQuery(document).ready(function($) {
jQuery('.ba-slider').beforeAfter();
});

Within the same code block, head over to the CSS section, and here's the code:

.ba-slider {
position: relative;
overflow: hidden;
}
.ba-slider img {
width: 100%;
display:block;
max-width:none;
}
.ba-slider .resize {
position: absolute;
top:0;
left: 0;
height: 100%;
width: 50%;
overflow: hidden;
}
.ba-slider .handle {
position:absolute;
left:50%;
top:0;
bottom:0;
width:4px;
margin-left:-2px;
background: #ffffff;
cursor: ew-resize;
}
.ba-slider .handle:after {
position: absolute;
top: 50%;
width: 50px;
height: 50px;
margin: -32px 0 0 -24px;
content: '\2194';
color: black;
font-size: 28px;
text-align: center;
background: #ffffff;
border-radius: 50%;
}

Add a Div, give it class ba-slider
And rename it baslider div
Add your first image (the before image) inside baslider div.

The second div, should be nested under the first one.
Assign the class to it resize.
Rename it as resize div.
Add your second image (the after image) inside resize div.

refer to image above for the structure.

Last step is to add a third div, assign class handle
This goes under the main div (baslider div)