How To Hidden Blogger Header and Replace Image Instead

1.Log in to your dashboard--> layout- -> Edit HTML

2.Scroll down to where you see this:

#header-wrapper {
width:800px;
margin:0 auto 10px;
border:1px solid $bordercolor;
}
Note :- width:660px can be different value.
3.Now Replace the above code with the below code.

#header-wrapper {
width:800px;
margin:0 auto 10px;
border:1px solid $bordercolor;
display:none;
}
Done. above code hides your blog header.
4.To use a image instead header,find the below code.

5.Now paste the below code just after the above code.




6Click on "Save Templates" and you are done.