Use the display property to specify the type of box used for an HTML element.
Example
You can try to run the following code to implement the display property to display flex container.
<!DOCTYPE html>
<html>
<head>
<style>
.mycontainer {
display: flex;
height: 300px;
background-color: orange;
}
.mycontainer > div {
background-color: white;
text-align: center;
line-height: 90px;
font-size: 40px;
width: 100px;
margin: 50px;
}
</style>
</head>
<body>
<h1>Quiz</h1>
<div class = "mycontainer">
<div>Q1</div>
<div>Q2</div>
<div>Q3</div>
<div style = "align-self: center">Q4</div>
<div>Q5</div>
</div>
</body>
</html>