Вы не можете использовать ссылку Bootstrap в своем проекте, и вы можете удалить встроенный стиль в свой файл. Я решил свою ошибку, и это работает отлично ... Вы можете попробовать этот HTML файл в папке проекта, то запустить его ...
<html>
<head>
\t <link href="https://fonts.googleapis.com/css?family=Montserrat" rel="stylesheet">
\t <link rel="stylesheet" type="text/css" href="thumb-css/style.css">
\t <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="isotope-wrap">
<div class="col-lg-12 offset-top-34">
<div data-isotope-layout="fitRows" data-isotope-group="gallery" class="isotope isotope--loaded" style="position: relative; height: 2100px;">
<div class="row">
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item">
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
\t <figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item" >
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
<figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item" >
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
<figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item" >
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
<figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item" >
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
<figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
<div data-filter="All" class="col-xs-12 col-sm-6 col-lg-4 isotope-item" >
<div class="inset-xl-left-20 inset-xl-right-20">
<a class="thumbnail-classic" href="index-variant-2.html" target="_blank">
<figure>
<img class="img-responsive" src="images/intense-570x428.jpg" alt="">
<figcaption class="thumbnail-classic-caption text-center">
<h4 class="thumbnail-classic-title text-light" style="font-family: 'Montserrat', sans-serif; color: #212121;text-transform: uppercase; text-align: center; font-weight: 100">Intense</h4>
<p class="thumbnail-classic-desc text-bold veil reveal-xs-block" style="font-family: 'Montserrat', sans-serif;text-transform: uppercase;font-weight: 100;text-align: center;">Feel the power of future</p>
</figcaption>
</figure>
</a>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
Введите код, то, что вы пробовали, какие идеи у вас были ... – Armin
вместо этого создайте плункер. – Aravind
Не смотрел проект - может ли он использовать существующие фреймворки, такие как magnific-popup и jquery? jQuery помогает вам управлять загрузкой изображений, а magnific-popup - это идеальная галерея IMHO. – Gunnar