In your CSS, add this:
H1 {
font-size:10px;
}
If you want the font to be 10px. You could also use something like: .8em.
If you want to adjust the H1 tag in a div id:
#dividname H1{
font-size: .7em;
}
You can also assign a “class” to a specific H1 tag if you rather do it individually.
To reduce the huge gap between header text and the next line, add something like this:
padding-bottom:-10px;
There’s no doubt that in time, a search engine like Google will start piecing everything together. However, just because you change your attributes on heading tags does not mean you are trying to fool the SE bots.