In CSS math, that’s 150 + 30 (for the margins) + 2 (for the 1-pixel border on the left and right edges) + 20 (for the padding on both sides), or 202 pixels.

Master CSS headers with this complete guide. Styling, hierarchy, and branding tips for better websites. Updated for 2025.

Use CSS code to style your site headers with borders and other design elements. HTML and CSS use a box model, which means that page elements include margins, padding, background colors and ...

How to Remove the Cell Spacing in CSS. HTML tables are comprised of rows and cells. In traditional HTML coding you remove the spacing within a cell by setting the "cellspacing" attribute to zero ...