Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS CSS Layout Basics Getting Started with CSS Layout Why Vertical Margins Collapse

Bei Zhang
PLUS
Bei Zhang
Courses Plus Student 7,113 Points
Posted by Bei Zhang
Bei Zhang
Courses Plus Student 7,113 Points

i checked the vertical elements, there is no larger part can collapse. could you kindly help me to check?

/* ================================= Base Element Styles ==================================== */

body { line-height: 1.6; color: #3a3a3a; }

a { color: #fff; text-decoration: none; }

/* ================================= Base Layout Styles ==================================== */

/* ---- Layout Containers ---- */

.main-header { background: #3acec2; padding:2em 0； }

.wrapper{ width:70%; margin:0 auto; }

.main-footer { padding: 2em 0; background: #d9e4ea; }

/* ---- Page Elements ---- */

/* ================================= navigation Styles ==================================== */ .name{ margin:0; }

Amrit Pandey
Amrit Pandey
17,595 Points
Amrit Pandey
Amrit Pandey
17,595 Points

cannot actually understand your problem. If you want to see margin collapse, put a red border around every element by

*{
  border: 2px solid red;
}

You'll see that some of the elements will flow out of the divs

Bei Zhang
Bei Zhang
Courses Plus Student 7,113 Points
Bei Zhang
Bei Zhang
Courses Plus Student 7,113 Points

i have got it right. the default <body>element has a margin that keep space in the browser. thx for your attention

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Document body styling usually has margins by default.

That usually results in a better appearance, but if you need to remove them you can do so in your CSS:

body { margin: 0; }
Amrit Pandey
Amrit Pandey
17,595 Points
Amrit Pandey
Amrit Pandey
17,595 Points

that is good to include but professional approach involves including a normalize.css file which removes all in-browser consistency.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

A normalizing file would probably not remove body margins, but it might set them to a consistent value. You'd still want to remove them in your custom CSS.