#peptide-calculator {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ddd;
    background: #f9f9f9;
    border-radius: 5px;
}
#peptide-calculator-form label {
    display: block;
    margin: 10px 0 5px;
    font-weight: bold;
    color: #005f8d;
}
#peptide-calculator-form select {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #f1f1f1;
    cursor: pointer;
}
#peptide-calculator-form select:hover {
    background-color: #e9e9e9;
}
#peptide-calculator-form button {
    display: block;
    width: 100%;
    padding: 10px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
#peptide-calculator-form button:hover {
    background: #005f8d;
}
.calculator-title {
    font-size: 1.5em;
    color: #005f8d;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
}
#calculator-result p {
    font-size: 1em;
    color: #0073aa;
    font-weight: bold;
}