JSFiddle - React, Tailwind, and code Playground

HTML

<div class="header">
        <p>Header</p>
</div>
<div class="main">
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
</div>
<div class="footer">
        <p>Footer</p>
</div>

CSS

div {
    margin:0 auto;
}
.main {
    width:400px   
}


.header{background:green}
.footer{background:orange}
.main{background:red}