Yes, in a week you should be able to master the basics of both HTML and CSS and gain the ability to construct some basic webpages.
This course on khanacademy is a good starting point and it's free!
https://www.khanacademy.org/computing/computer-programming/html-css
After that you can progress with a scripting language, such as javascript, to animate your webpages and make them more interactive.
Good luck!