I have this psd and trying to convert it to html css. But only thing I can't determine is what font they used in the psd? How can i find out about the font information?
To get the fonts information form a PSD file you can use online tools if you can't or won't use Photoshop (or if you prefer using Gimp, that rasterizes PSD fonts).
For example you can try out this html5 PSD font online extractor "Get PSD Fonts".
It's a PSD font information extractor based on Melitingice Github project psd.js that does not require uploading files, working locally in your browser page