Enhancement and Integration React App to API -- 2

hi.. I have react code for frontend side, style is not yet completed, also data integration thru API. my budget is $250 with one weeks for finish it. I need enhancement style and API integration. You only doing on react code side, API will support as you need.. I will tell more details on chat.. I'm welcome if you have another timeline and cost request. Best timeline and best cost will be awarded soon.