how to make slideshow image completely clickable without button label in dawn theme

[justoos]

I have tried to make my slideshow image clickable with the code 

<a href="{{ block.settings.image_link }}" style="display: block;position: absolute;width: 100%;height: 100%;left: 0;top: 0;z-index: 999;"></a>

however it only takes me to the homepage. 

Does someone have any solution to this?