1. Prepare your html design first.
2. Move styles,scripts and images to appropriate places in sharepoint
styles,scripts->style library
images->images
Default MasterPages:
======================
MOSS 2007-default.master
SP 2010-v4.master,minimal.master,default.master - will give 2007 user interface in 2010
SP2013-seattle.master, oslo.master
3. Adjust the styles, script and images links in html code
4. Open SharePoint Designer 2013->open site->give url
5. click on masterpages->copy seattle.master and paste
6. rename pasted file as hayathi.master
7. right click on hayathi.master->checkout->again right click->Edit file in advanced mode
8. find s4-workspace-> then below that find s4-bodyContainer and hide it by using style="display:none"
9. copy your html body code and paste in between s4-workspace and bodycontainer.
10. go to head and configure styles and scripts.
11. hide s4-ribbonrow style="display:none"
12. hide suitebar
13. find PlaceHolderMain contentplaceholder and cut and paste into your design,
where you want to have child page