JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div class="bar-clipper">
        <div class="bar-wrapper">
            <span class="bar1"></span>
            <span class="bar2"></span>
            <span class="bar3"></span>
            <span class="bar4"></span>
            <span class="bar5"></span>
        </div>
    </div>
</body>

</html>

CSS

.bar-clipper {
            width: calc(300px * 0.8);
            height: 20px;
            overflow: hidden;
            position: absolute;
        }

        .bar-wrapper {
            width: 300px;
            height: 20px;
            display: flex;
            position: absolute;
        }

        .bar-wrapper span {
            width: 100%;
            height: 100%;
        }

        .bar-wrapper .bar1 {
            background-color: #163f5f;
        }

        .bar-wrapper .bar2 {
            background-color: #21639b;
        }

        .bar-wrapper .bar3 {
            background-color: #3caea3;
        }

        .bar-wrapper .bar4 {
            background-color: #f6d65b;
        }

        .bar-wrapper .bar5 {
            background-color: #ed543b;
        }