Silver Quantum child theme problems

Hi,

Need help with customising my silver quantum child theme as I can’t figure out the last few tweaks. Any help will be very much appreciated.

My test site: trainingintro.wongswrite.com

1) I can’t make the title text change colour, even after I put !important after the colour. (Changing the colour of the tag line below was simple enough)

2) I changed the width of the page (including the header image area) to 1060px. But when I upload the image, it doesn’t cover the full width. Even though the uploader asked for an image that is 1060 X 300.

3) I wish to move the search box down but cannot find where it is listed.

4) after I move the search box down, I want to stretch the post title to the full width of the page. Again, cannot find the place to change this. Would also like to change the post title colour to black if I can find where to change this.

Thanks in advance.