body {
    font-family: sans-serif;
    margin: 0;
}

header {
    background-color: #f0f0f0;
    padding: 20px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

li {
    margin-left: 20px;
}

a {
    text-decoration: none;
    color: #333;
}

main {
    padding: 20px;
}

#prescription {
    max-width: 800px;
    margin: 0 auto;
}

.prescription-details {
    border: 1px solid #ccc;
    padding: 20px;
    border-radius: 5px;
}

.btn {
    background-color: #333;
    color: #fff;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}