#guide-section {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    margin-top: 50px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

#guide-section h2 {
    text-align: center;
    color: #05c1a8;
    margin-bottom: 20px;
}

#guide-section .guide-content {
    font-size: 1.1em;
    color: #333;
    line-height: 1.6;
}

#guide-section ul, #guide-section ol {
    margin-left: 20px;
}

#guide-section ul li, #guide-section ol li {
    margin-bottom: 10px;
}

#guide-section h3 {
    margin-top: 20px;
    font-size: 1.3em;
    color: #05c1a8;
}

#guide-section p {
    margin-top: 10px;
    font-size: 1.1em;
}

#guide-section ul li {
    list-style-type: square;
}

        #11{
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 20px;
            background-color: ;
            color: #333;
        }
        h1 {
            text-align: center;
            margin-bottom: 40px;
            color: #05c1a8;
        }
        .calculator-container {
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: white;
            box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
            border-radius: 10px;
        }
        .section {
            margin-bottom: 30px;
        }
        label {
            font-size: 1.1em;
            display: block;
            margin-bottom: 10px;
            color: #333;
        }
        input[type="date"], input[type="number"], select {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1em;
        }
        .btn {
            padding: 10px 20px;
            background-color: #05c1a8;
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1.1em;
            cursor: pointer;
        }
        .btn:hover {
            background-color: #05c1a8;
        }
        .result {
            background-color: #05c1a859;
            padding: 20px;
            border-radius: 10px;
            margin-top: 20px;
        }
        .result h2 {
            text-align: center;
        }