body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

h1 {
    color: #333;
    text-align: center;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    padding: 10px;
    border-bottom: 1px solid #ccc;
}

form {
    display: flex;
    flex-direction: column;
    width: 300px;
    margin: 0 auto;
}

input[type="text"] {
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

input[type="submit"] {
    padding: 10px;
    margin-bottom: 5px;
    border: none;
    border-radius: 4px;
    background-color: #333;
    color: white;
    cursor: pointer;
}

@media screen and (max-width: 600px) {
    div.container {
        margin-top: 200px;
    }

    form {
        width: 500px;
    }

    label {
        font-size: 18px;
    }
    
    input[type="text"], input[type="submit"] {
        font-size: 25px;
        padding: 18px;
    }

    li {
        font-size: 25px;
        padding: 18px;
    }
}