What is the reason behind the fact that using margin: auto 0px; does not result in vertical centering of a block, whereas margin: 0px auto;

To effortlessly set the width to auto, use margin:0px, auto

#container{
background-color: blue;
height:600px;
width:600px;
margin:0px auto;}
<div id="container"></div>

However, why is it not possible to set the height to auto with margin:auto 0px? In other words, why doesn't margin: auto 0px; vertically center a block like margin: 0px auto; horizontally centers it?

#container{
background-color: blue;
height:600px;
width:600px;
margin:0 auto;}
<div id="container"></div>

Answer №1

When aiming to achieve a centered vertical-align, the method you employ will vary depending on your specific intentions.

For block level elements, each div/box/etc is placed in a left to right and then top to bottom orientation. To gain a better understanding of block elements, consider checking out this resource or this one on the MDN website. Additionally, delve into an in-depth analysis of the display property here.

  • You can explore using translateY and percentages as outlined in this informative blog post

  • If you desire to permanently center your div on the screen, check out this effective technique for achieving vertical centering with detailed explanations here.

Answer №2

Looks like there's a syntax issue here. The correct code should be:

padding: 10px;

Get rid of the 'em' and eliminate the semicolon.

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