Mobile view for section looks weird - html

Question

I'm having trouble figuring out mobile view layout problem. When I view my site via mobile, the section shrinks accordingly instead of showing full width image and stacked. How do I fix it so that the boxes sit above each other when viewed via mobile? I am using Bootstrap.
<section class="health" id="health">
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="section-title st-center">
<h3>Places to exercise</h3>
</div>
<div class="grid">
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2>Nice <span>Lily</span></h2>
<p>Lily likes to play with crayons and pencils</p>
</figcaption>
</figure>
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2><span>EAST COAST PARK</span></h2>
<p>Long stretch of running and cycling/skating paths, it’s one of Singapore’s best spots to go jogging or bike riding.</p>
</figcaption>
</figure>
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2>Nice <span>Lily</span></h2>
<p>Lily likes to play with crayons and pencils</p>
</figcaption>
</figure>
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2>Nice <span>Lily</span></h2>
<p>Lily likes to play with crayons and pencils</p>
</figcaption>
</figure>
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2>Nice <span>Lily</span></h2>
<p>Lily likes to play with crayons and pencils</p>
</figcaption>
</figure>
<figure class="portfolio-item">
<img src="images/eastcoastpark.jpg" alt="east coast park"/>
<figcaption>
<h2>Nice <span>Lily</span></h2>
<p>Lily likes to play with crayons and pencils</p>
</figcaption>
</figure>
</div>
</div>
</div>
</div>
</section>

Answer 1

It might be that you gave the figure or any other element the picture is nested in a fixed hieght, you can fix in css that with height: auto;

Answer 2

the best way to do this would be to look at adding col-span to each of the images for example, using col-span-4 on three images would allow them to stack nicely against each other in desktop but then in mobile view they would automatically drop under each other due to the default css
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
<img class="img-responsive" src="assets/img/gallery/1.jpg" alt="">
</a>
</div>
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
<img class="img-responsive" src="assets/img/gallery/2.jpg" alt="">
</a>
</div>
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
<img class="img-responsive" src="assets/img/gallery/3.jpg" alt="">
</a>
</div>
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
<img class="img-responsive" src="assets/img/gallery/4.jpg" alt="">
</a>
</div>