shopify developer

1. 1. The developer installed code which hides/shows product images with the use of alt-code: mobile_image and desktop_image respectively, so different images show up across device, unfortunately only the tag desktop_image seems to be working and mobile shows both images right now.. Here is a link: [login to view URL] 2. The style ( boldness ) in the header of the of the currency doesn't quite match with the rest of the right hand side. Here is my website: [login to view URL] here is how it's meant to look: [login to view URL] 3. ( Do this only if its not too expensive ) Currently the landing page ( which I can edit in online editor ) is just 1 video. I would like the landing page to be this same video, but as a custom page, not the one i edit in theme editor, so I can make another page which I will edit in the theme editor. If this is confusing, basically I want my landing page to be like this [login to view URL] except with video instead of image and I want to be able to edit the 2nd page 4. I need the image height on mobile only to be set to 1.25, so when i upload a square image it's still a vertical space on mobile 5. ( again only if its easy to fix ) I have installed an app which switched images based on variant selected, unforutnately the alt-code mobile/desktop_image shows the incorrect image at first on mobile for a brief second and then scrolls it to the correct one with some delay ( only on mobile ) 6. [login to view URL] remove 'reset' button when a filter is selected