FatalErrorException in line 52: syntax error, unexpected 'height' (T_STRING)

I am trying to create an image route, meaning, using an image for a route. This is the update link I'm trying to create but it keeps giving this error:

FatalErrorException in fdda73edfe1d1362826e9383e141e71a line 52:
syntax error, unexpected 'height' (T_STRING)

Maybe the formatting of css is what it does not understand. This is the code:

{!! Html::linkRoute('updateUserContact', '<img style='height: 100%; width: 100%; object-fit: contain' src="' . asset('images/add.png') . '"/>', contacts->id) !!}

via Chebli Mohamed