Clear Blocks, Header in Mobile Mode

Hi, Thank you for a great theme! I cannot get the responsive variant of the header description as it shows in your demo. It should go under the header image in the responsive mode, but on my site it stays in the middle of the image so that it's overlaping and so bad to see and to read. Why? What sould I do to get it? Thanks Erica http://meiosis.erica-design.fr/