Margin-top causing vertical scrowbar

My html,body, and another div called Root, all have height of 100% ( I cant use min-height the root would not expand to the full height of the parent), when i give a margin top of 2rem it causes a vertical scrowbar, i cant understand why it's causing an scrowbar or how to resolve it <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="style.css"> <title>Document</title> </head> <body> <div class="root"> <div class="margin-top-10"> Something </div> </div> </body> </html> *, *::before, *::after{ margin: 0; padding: 0; } html, body{ height: 100%; background-color: blue; } .root{ height: 100%; background-color: aqua; } .margin-top-10{ margin-top: 2rem; background-color: brown; color: white; }
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7 Replies
vince
vince13mo ago
If there's a margin-top of 2rem and you have a height of 100%, its height is going to be (in this instance) the height of the viewport + 2rem, so there's going to be vertical scroll Use
* {
box-sizing: border-box;
}
* {
box-sizing: border-box;
}
and see if that fixes it
cerstar
cerstar13mo ago
thanks for the explanation I coul understand, i tought that the would only give the space on the tome and not causing Scrow, like the padding
cerstar
cerstar13mo ago
I tried it , still the same result
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cerstar
cerstar13mo ago
*, *::before, *::after{ margin: 0; padding: 0; box-sizing: border-box; } maybe doing it with margin is the problem
! nier
! nier13mo ago
the root div has a height of 100% + the margin-top-10 div has a margin top which = the document's height will be more than 100% and so there is a scrollbar What are you trying to achieve? If you want a space between the top of the screen and the text you can instead use padding-top and the document's height will be 100vh
cerstar
cerstar13mo ago
I wanted to understand, what was happening and why, with you explanations I understood so I thank for that. Then a wanted to have some space inbetween the divs, and testing the sugestion's, and ended using padding; it was for a bigger projet i just remade the error in the example
! nier
! nier13mo ago
Glad I could help
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