Check out example codes for "center a div". It will help you in understanding the concepts better.
Code Example 1
#inner {
width: 50%;
margin: 0 auto;
}
Code Example 2
<div class="" style="width: 90%; background-color: black;margin: auto;">
<h1>Okay</h1>
</div>
<!--Add margin: auto to your div or section-->
Code Example 3
<!DOCTYPE html>
<html>
<head>
<style>
.center {
margin: auto;
width: 80%;
border: 3px solid #73AD21;
padding: 10px; # deals with margins within the element itself
margin: 20px; # deals with area around outside of element
}
</style>
</head>
<body>
<h2>Center Align Elements</h2>
<p>To horizontally center a block element (like div), use margin: auto;</p>
<div class="center">
<p><b>Note: </b>Using margin:auto will not work in IE8, unless a !DOCTYPE is declared.</p>
</div>
</body>
</html>
Code Example 4
.center
{
margin: auto;
width: 50%;
border: 3px solid green;
padding: 10px;
}
Code Example 5
.parent-class {
display: flex;
align-items: center;
justify-content: space-around;
}
Code Example 6
<div id="outer">
<div id="inner">Foo foo</div>
</div>
//css:, demo with border
<style>
#inner {
display: table;
margin: 0 auto;
border: 1px solid black;
}
#outer {
border: 1px solid red;
width:100%
}
</style>
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