Hi nycps
It's a custom HTML module with predefined content. Here is its output content:
<div class="gkPage">
<div class="gk-cols gk-gallery" data-cols="3">
<div>
<a data-order="1" href="images/demo/gallery/image1.jpg" data-size="1280x1280" data-title="Modern clock" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb1.jpg" height="334" width="334" alt="Thumbnail I" /></a>
<a data-order="4" href="images/demo/gallery/image2.jpg" data-size="1280x853" data-title="Painting love" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb2.jpg" height="224" width="335" alt="Thumbnail II" /></a>
<a data-order="7" href="images/demo/gallery/image3.jpg" data-size="1164x872" data-title="Green Barrel" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb3.jpg" height="251" width="335" alt="Thumbnail III" /></a>
<a data-order="10" href="images/demo/gallery/image4.jpg" data-size="1280x853" data-title="Wooden doors" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb4.jpg" height="224" width="335" alt="Thumbnail IV" /></a>
<a data-order="13" href="images/demo/gallery/image5.jpg" data-size="852x1280" data-title="Japanese dinner" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb5.jpg" height="504" width="335" alt="Thumbnail V" /></a>
</div>
<div>
<a data-order="2" href="images/demo/gallery/image6.jpg" data-size="853x1280" data-title="Photography art" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb6.jpg" height="457" width="305" alt="Thumbnail VI" /></a>
<a data-order="5" href="images/demo/gallery/image7.jpg" data-size="1280x853" data-title="Sailing in the fog" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb7.jpg" height="203" width="305" alt="Thumbnail VII" /></a>
<a data-order="8" href="images/demo/gallery/image8.jpg" data-size="1280x853" data-title="Travel time" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb8.jpg" height="204" width="305" alt="Thumbnail VIII" /></a>
<a data-order="11" href="images/demo/gallery/image9.jpg" data-size="960x1280" data-title="For ged" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb9.jpg" height="406" width="305" alt="Thumbnail IX" /></a>
<a data-order="14" href="images/demo/gallery/image10.jpg" data-size="1280x853" data-title="Summer time" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb10.jpg" height="203" width="305" alt="Thumbnail X" /></a>
</div>
<div>
<a data-order="3" href="images/demo/gallery/image11.jpg" data-size="1280x853" data-title="Mobile music" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb11.jpg" height="198" width="297" alt="Thumbnail XI" /></a>
<a data-order="6" href="images/demo/gallery/image12.jpg" data-size="1155x1280" data-title="Guitar artist" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb12.jpg" height="329" width="297" alt="Thumbnail XII" /></a>
<a data-order="9" href="images/demo/gallery/image13.jpg" data-size="873x1280" data-title="Typewriter" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb13.jpg" height="436" width="297" alt="Thumbnail XIII" /></a>
<a data-order="12" href="images/demo/gallery/image14.jpg" data-size="1280x853" data-title="Morning coffee" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb14.jpg" height="199" width="297" alt="Thumbnail XIV" /></a>
<a data-order="15" href="images/demo/gallery/image15.jpg" data-size="1280x848" data-title="Fitness time" data-desc="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin consectetur dui at tempor elementum. Aenean convallis metus nec nibh varius hendrerit."><img src="images/demo/gallery/thumb15.jpg" height="196" width="297" alt="Thumbnail XV" /></a>
</div>
</div>
</div>