In order to use a file input just use an input type="file"
with the class a-input
and add
a label next to it.
<input type="file" class="a-input" id="file01">
<label for="file01">No file chosen</label>
We have two modifiers in relation to the size of the component.
-small
-large
Example
<input type="file" class="a-input -small" id="file01">
<label for="file01">No file chosen</label>