* {
    box-sizing: border-box;
}

body {
    background-color: #121212;
    color: #ffffff;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
}

h1, h2, h3 {
    color: #bb86fc;
}

.equation {
    background-color: #1e1e1e;
    border-radius: 5px;
    padding: 10px;
    margin: 15px 0;
}

.procedure-box {
    background-color: #333;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
}

ol {
    margin-left: 20px;
}
button {
            background-color: #bb86fc;
            color: white;
            border: none;
            padding: 10px 20px;
            cursor: pointer;
            border-radius: 5px;
            font-size: 16px;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #68409a;
        }