There are at least 3 ways to center an element within a container
Method #1:
Use a flexbox on the container with:
.container {
display: flex;
align-items: center;
justify-content: center;
}Method #2:
Use a grid on the container with:
.container {
display: grid;
place-items: center;
}Method #3:
Absolutely position the child element with:
.container {
position: relative;
}
.element {
position: absolute;
top: 50%;
left: 50%;transform: translate(-50%, -50%);
}Full Demo Page
Here’s a full demo page for you to play around with.
<html>
<head>
<title>ScottsWeb.Dev - Center Element In Container</title>
</head>
<style>
.container {
width: 50%;
height: auto;
aspect-ratio: 1.5/1;
margin: 0 auto;
position: relative;
border: solid 1px black;
position: relative;
}
.element {
width: 200px;
height: 150px;
background-color: lightgreen;
border: solid 1px black;
display: block;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
</style>
<body>
<div class="container">
<div class="element"></div>
</div>
</body>
</html>