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HTML

CSS

CSS Base

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JavaScript

Babel includes JSX processing.

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HTML

              
                <div class="container">
<h1 class="cool-border">Hello my little border!</h1>

<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut fringilla est ac odio mollis, id molestie lectus fermentum. Pellentesque vulputate porttitor ligula, nec pellentesque mi tempor ac. Donec pretium, nisi nec varius molestie, arcu ipsum hendrerit odio, et consectetur nunc quam scelerisque enim. Fusce sodales elit id rhoncus auctor. Sed ac dolor vel ipsum facilisis tincidunt. Nulla facilisi. Pellentesque vitae sem at risus rutrum egestas sit amet id tellus. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nullam eleifend ligula quis ligula sollicitudin, eget faucibus ipsum cursus.</p></div>
              
            
!

CSS

              
                .cool-border::after {
    content: "";
    display: block;
    height: 7px;
    background-image: linear-gradient(120deg, #e5ea15, #00c4ff);
    position: absolute;
    top: calc(100% + 5px);
    left: 50%;
    width: 45%;
    transform: translateX(-50%) skew(-50deg);
}
.cool-border {
    position: relative;
}







h1 {
    width: 80vw;
    margin: 40px auto 80px;
    text-align: center;
    font-size: 5vw;
    line-height: 1.4em;
    
    
    
}
.container {
    max-width: 1000px;
    margin: auto;
    p {
        font-size: 1.3rem;
        line-height: 1.5em;
    }
}
              
            
!

JS

              
                
              
            
!
999px

Console