Edit an existing shopify online store small edits required

The following are what I need. I have enabled a "View size chart" button on each product however I need to have a different size chart shown for each individual product. I need to edit my accordian jquery to automatically open a section when the link is opened, I.e when a sub link is clicked the page then goes to FAQ and automatically opens and highlights that section I need css styling on my cart page and other pages throughout my website to make the overall appearance more desirable. I need to change my search bar on top so that when it is pressed a search bar slides to the side and then can type instead of a pop up screen. Also need to change the theme page and the image sizing, will give examples of styling I would like. Automatically detect the location and change currency to the desired location. Buttons on product page appear to be cut off when in mobile view so this also needs to be fixed.