huddle landing page responsive

Dear All, This is my third project here and I finished this carefully.I want you all to review my work and plz help me with the points mentioned below: 1.How to get the same paragraph styling as the one given in design 2.There is some box-shadow on the register button in the design,I think I didn't get that right in my project,how could I achieve that? Also please highlight the other points that could be improved with my design. Thank you .