* add custom headers to API resource
* refactoring
* page title
* chart
* gas prices snippet
* GasPrice component
* add ENV for gas units
* dark theme and other tweaks
* tests
* add base and priority fee
* [skip ci] small fiat values
* change behavior of the variable
* update tooltip layout
* refactor gas info tooltip
* refactor GasPrice component
* fix logic and deploy demo for eth mainnet
* tests
* remove link from anchor
* [skip ci] rollback ENVs for demo
* review fixes
* fix tests
