Biology Tree Diagram

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Biology Tree Diagram</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
            background: #e0f7fa;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .tree {
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
        }
        .tree ul {
            padding-top: 20px;
            position: relative;
            transition: all 0.5s;
            display: flex;
            justify-content: center;
        }
        .tree li {
            list-style-type: none;
            margin: 0 10px;
            text-align: center;
            position: relative;
            padding: 20px 5px 0 5px;
        }
        .tree li::before, .tree li::after {
            content: '';
            position: absolute;
            top: 0;
            right: 50%;
            border-top: 2px solid #2d3436;
            width: 50%;
            height: 20px;
        }
        .tree li::after {
            right: auto;
            left: 50%;
            border-left: 2px solid #2d3436;
        }
        .tree li:only-child::after, .tree li:only-child::before {
            display: none;
        }
        .tree li:only-child {
            padding-top: 0;
        }
        .tree li:first-child::before, .tree li:last-child::after {
            border: 0 none;
        }
        .tree li:last-child::before {
            border-right: 2px solid #2d3436;
            border-radius: 0 5px 0 0;
        }
        .tree li:first-child::after {
            border-radius: 5px 0 0 0;
        }
        .tree ul ul::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            border-left: 2px solid #2d3436;
            width: 0;
            height: 20px;
        }
        .tree li a {
            border: 2px solid #2d3436;
            padding: 10px 20px;
            text-decoration: none;
            color: #00695c;
            font-family: 'Arial', sans-serif;
            font-size: 18px;
            display: inline-block;
            border-radius: 5px;
            transition: all 0.3s;
            position: relative;
            background: #b2dfdb;
            box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .tree li a .icon {
            margin-right: 10px;
            font-size: 24px;
        }
        .tree li a:hover, .tree li a:focus {
            background: #004d40;
            color: #fff;
            border-color: #004d40;
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .tree li a:hover .icon, .tree li a:focus .icon {
            animation: bounce 0.6s;
        }
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }
        .tree li a span {
            font-size: 16px;
        }
        .tree .tooltip {
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: #333;
            color: #fff;
            padding: 5px 10px;
            border-radius: 3px;
            font-size: 14px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            white-space: nowrap;
        }
        .tree li a:hover .tooltip, .tree li a:focus .tooltip {
            opacity: 1;
            visibility: visible;
            bottom: 110%;
        }
        .tree li a::before {
            content: '🌿';
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 20px;
        }
    </style>
</head>
<body>
    <div class="tree">
        <ul>
            <li>
                <a href="#"><span class="icon">🦁</span><span>Animalia</span>
                    <div class="tooltip">Kingdom Animalia</div>
                </a>
                <ul>
                    <li>
                        <a href="#"><span class="icon">🐶</span><span>Chordata</span>
                            <div class="tooltip">Phylum Chordata</div>
                        </a>
                        <ul>
                            <li>
                                <a href="#"><span class="icon">🐺</span><span>Mammalia</span>
                                    <div class="tooltip">Class Mammalia</div>
                                </a>
                            </li>
                            <li>
                                <a href="#"><span class="icon">🦎</span><span>Reptilia</span>
                                    <div class="tooltip">Class Reptilia</div>
                                </a>
                            </li>
                        </ul>
                    </li>
                    <li>
                        <a href="#"><span class="icon">🦋</span><span>Arthropoda</span>
                            <div class="tooltip">Phylum Arthropoda</div>
                        </a>
                        <ul>
                            <li>
                                <a href="#"><span class="icon">🐞</span><span>Insecta</span>
                                    <div class="tooltip">Class Insecta</div>
                                </a>
                            </li>
                            <li>
                                <a href="#"><span class="icon">🦂</span><span>Arachnida</span>
                                    <div class="tooltip">Class Arachnida</div>
                                </a>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul>
    </div>
</body>
</html>

Biology Tree Diagram - MeggiTools