body {

    margin: 0;
    padding: 0;

    background: #f5f5f5;

    font-family: Arial;
}

.container {

    max-width: 600px;

    margin: 20px auto;

    background: white;

    padding: 20px;

    border-radius: 10px;
}

h2 {

    text-align: center;

    margin-bottom: 20px;
}

.form-item {

    margin-bottom: 15px;
}

label {

    display: block;

    margin-bottom: 5px;
}

input,
textarea {

    width: 100%;

    padding: 10px;

    box-sizing: border-box;

    border: 1px solid #ddd;

    border-radius: 5px;
}

textarea {

    height: 100px;
}

button {

    width: 100%;

    height: 45px;

    border: none;

    background: #1677ff;

    color: white;

    border-radius: 5px;

    font-size: 16px;
}