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CSS CSS Basics (2014) Basic Layout Width and Height Properties

margin and width...

if i change the width to a block element will that effect the margin since it has more space between itself and the parent element?

1 Answer

Hi Jake,

You'll get varying degrees of answers because your question forces us to make a few assumptions about the child or block element you're trying to change and what styling has been applied to the parent element. Still, I want to be helpful. Rather than going through every possible scenario, I highly encourage you to turn this question into an experiment.

You'll need to launch Workspaces and launch a new Workspace. Use a static environment with an HTML boilerplate. Once it's launched open up the index.html file and highlight and replace all of the code in there with the following code and save.

.parent-container {
   border: 3px solid blue;
   width: 500px;
   height: 500px;
   margin: 0 auto; 

.child-container {
    border: 3px solid red;
    width: 400px;
    height: 300px;
    margin: 0 auto;


<div class="parent-container">
    <div class="child-container"></div>

Preview the code after you save and open up your dev tools on Google Chrome and pay attention to a few things: Screenshot

If screenshot does not load you can access here: Click to see

Play around with the width settings of the child container and you'll be able to answer your question(s) after about 3-5 minutes of playing with different widths.