Expanding Search Bar

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Expanding Search Bar</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            outline: 0;
        }

        body {
            background-color: #383838;
        }

        section {
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        input[type=search] {
            width: 160px;
            padding: 8px 20px 8px 45px;
            border:#fff solid 2px;
            font-size: 18px;
            border-radius: 25px;
            background-position: 2% 50%;
            background-repeat: no-repeat;
            background-size: 30px;
            background-image: url('search.svg');
            background-color: transparent;
            transition: 0.5s all ease-in-out;
            filter: brightness(170%);
        }

        input[type=search]:focus,
        input[type=search]:not(:placeholder-shown) {
            width: 350px;
            background-color: #fff;
            filter: brightness(100%);
        }
        
    </style>
</head>
<body>
    <section>
        <form action="">
            <input type="search" placeholder="Search..." />
        </form>
    </section>
</body>
</html>
                                Copy Code
                            

Result Screenshot(s)

Expanding Search BarWorking Sample0