Why is my picture link extending beneath the image? [duplicate] - html

Question

This question already has answers here:
Image inside div has extra space below the image
(10 answers)
Closed 6 years ago.
I'm working on a photo page for a site I'm creating, however it seems that the link is extending into the whitespace beneath the image. The problem disappears when I remove the surrounding <section> but I'm not sure why.
Here's a Jsfiddle better showcasing my code and the problem
.photo {
text-align: center;
float: left;
width: 70%;
margin-left: 8%;
margin-top: 5%;
margin-bottom: 5%;
}
.photo a {
border: 1px solid red;
}
.photo img {
margin: 1%;
}
<section class="photo">
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
</section>
I added a border to the problem area. Any help is much appreciated!

Answer 1

because a and img are inline elements, so
make a a block level element by display:block, to the border appear around the image
set display:block to img to remove underneath whitespace caused by being an inline element. (other solution would be setting vertical-align-bottom, given img by default is vertical-align:baseline)
Note: I gave the img a max-width:100% to be responsive, and if you give the border to img instead of a, the a being display:block isn't necessary anymore, although is good to have it.
See more about inline elements here on w3
.photo {
text-align: center;
float: left;
width: 70%;
margin-left: 8%;
margin-top: 5%;
margin-bottom: 5%;
}
.photo a {
display: block;
}
.photo img {
display: block;
border: 1px solid red;
max-width: 100%;
margin: 1%
}
<section class="photo">
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
<a href="#">
<img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" />
</a>
</section>