Sep 13, 2022

Vertical Menu with Filling Effect

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<!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>Vertical Menu with Filling Effect</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Montserrat:[email protected]&display=swap" rel="stylesheet">
    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: 'Montserrat', sans-serif;
        }

        body {
            background-color: #383838;
        }

        :root {
            --blue: #4185f3;
            --yellow: #f1b504;
            --red: #e44134;
            --green: #32a250;
            --purple: #8F3FAF;
            --gray: #2b2b2b;
            --white: #fff;
            --transWhite: rgba(255,255,255, 0.1);
        }

        section#mainArea {
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: space-between;
            gap: 5px;
        }

        section#mainArea nav {
            width: 250px;
        }

        ul#menuList {
            list-style: none;
        }

        ul#menuList li {
            margin: 8px 0;
            position: relative;
            background-color: var(--gray);
            border-radius: 2px;
            overflow: hidden;
        }

        ul#menuList li::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            width: 5px;
            transition: 0.3s all ease-in-out;
        }

        ul#menuList li:nth-child(-n+5)::before {
            left: 0;
        }

        ul#menuList li:nth-child(n+6)::before {
            right: 0;
        }

        ul#menuList li:nth-child(1)::before,
        ul#menuList li:nth-child(6)::before {
            background-color: var(--blue);
        }

        ul#menuList li:nth-child(2)::before,
        ul#menuList li:nth-child(7)::before {
            background-color: var(--yellow);
        }

        ul#menuList li:nth-child(3)::before,
        ul#menuList li:nth-child(8)::before {
            background-color: var(--red);
        }

        ul#menuList li:nth-child(4)::before,
        ul#menuList li:nth-child(9)::before {
            background-color: var(--green);
        }

        ul#menuList li:nth-child(5)::before,
        ul#menuList li:nth-child(10)::before {
            background-color: var(--purple);
        }

        ul#menuList li:hover:nth-child(-n+5)::before {
            border-radius: 0 50px 50px 0;
            width: 110%;
        }

        ul#menuList li:hover:nth-child(n+6)::before {
            border-radius: 50px 0 0 50px;
            width: 110%;
        }

        


        ul#menuList li a {
            display: block;
            padding: 12px 20px;
            color: var(--white);
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            position: relative;
            z-index: 1;
        }

        section#contentArea {
            background-color: var(--transWhite);
            width: calc(100% - 250px);
        }
    </style>
</head>
<body>
    <section id="mainArea">
        <nav>
            <ul id="menuList">
                <li><a href="">Dashboard</a></li>
                <li><a href="">Product</a></li>
                <li><a href="">Order List</a></li>
                <li><a href="">Analytics</a></li>
                <li><a href="">Stock</a></li>
                <li><a href="">Total Order</a></li>
                <li><a href="">Team</a></li>
                <li><a href="">Messages</a></li>
                <li><a href="">Favorites</a></li>
                <li><a href="">Settings</a></li>
            </ul>
        </nav>
        <section id="contentArea">

        </section>
    </section>
</body>
</html>
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Result Screenshot(s)

Vertical Menu with Filling EffectWorking Sample0