Adjusting alignment of 'client scheduler' embedded buttons

Site URL: https://www.sulisskincarespa.com

Is there a way to fix the alignment of the 'client scheduler' embed button? I don't have access to the css for the client scheduling feature and I've tried adjust with all the possible css coding I thought would work, but it does nothing, so I've had to temporarily use spacers and it doesn't look good on some browsers.... any thoughts?

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