Borders on H1, H2, H3 tags

[sylie.blog]

I love the Suburbia theme and I feel removing the borders on the heading tags would make posts look a lot smoother. I added the following to the custom css but the preview still shows borders
h1 {
border-style:none;
}

h2 {
border-style:none;
}

I am new to adding CSS in Wordpress. Does anyone have suggestion for removing the heading tags border?

Thanks in advance!

[Mamaduka]

Best way to modify themes, is creating child themes, if your unfamiliar with check the codex guide: http://codex.wordpress.org/Child_Themes.

After you create child theme, paste your CSS into its style.css, that would override Suburbia's original styles.

[hainguyenk06]

where did you find the answer?