Caulking kitchen counter to backsplash near sink

Greetings! I would like to install an 84" wide floating double sink vanity, quartz top with 12" front depth apron across the front. The left side would have a knee hole for make-up area and the rest to the right end would have a wooden shelf for storage. I've seen how floating vanities are supported with brackets in studs, etc.. I was wondering how to support the large front apron. I don't mind having a light ash/hickory open base/shelf for support as it would match my new floor tile. Any suggestions on building an attractive open base with shelf for support? I've attached a very rough sketch. I believe I can have the top manufactured locally and I have a very good carpenter/jack of all trades that can build the base, install vanity and attach plumbing. Thanks for any suggestions. [img]https://cimg2.ibsrv.net/gimg/www.doityourselft.com-vbulletin/724x563/vanity_6b29de2865b0b67861a3e96057d39d85fa2e8537.jpg[/img]

Hi everyone, I need your help with a bathroom remodel. We installed a shower base that has a 2.5 inch threshold and accidentally ordered a shower door that requires a minimum 3 inch threshold. We are unable to return the shower door because it’s will cost hundreds of dollars as it needs to be returned via freight. Is there a way to increase the shower base threshold to make the shower door work? Thank you in advance for your help! We are desperate. Thank you