if you are using wordpress than you can use some free themes which are really amazing and adesnse responsive. the themes are full mobile responsive. so, easily you can rank on google.

1. Colormag

it is a free WordPress theme and the theme is very simple looking. so you can get adsense approval easily. i have personally use the theme in my some website. if you like the theme then you can also buy the premimum version of the theme.

1. Hitmag

it is also a free theme and best for adsense approval. the main attraction of the theme is its beautiful looking and some advance feature. you can also try the theme in your blog.