The image size looks to be about 200x200 px.
The figure css specifies the height/width ->
Code
figure {
width: 320px;
height: 280px;
text-align: center;
}
Should be something like
Code
figure {
width: 210px;
height: 210px;
text-align: center;
}
Also, there is some default CSS for figure ->
Code
figure {
display: block;
-webkit-margin-before: 1em;
-webkit-margin-after: 1em;
-webkit-margin-start: 40px;
-webkit-margin-end: 40px;
}
Your final CSS could look something like:
Code
figure {
width: 320px;
height: 280px;
text-align: center;
-webkit-margin-start: 0px;
-webkit-margin-end: 0px;
}