.capture-form {
    margin: 1em 0;
    padding: 1em;
}

.capture-form input[type="email"] {
    width: 100%;
    max-width: 400px;
    padding: 8px;
    margin-bottom: 10px;
}

.capture-form button[type="submit"] {
    padding: 8px 16px;
    cursor: pointer;
}

.capture-form .message {
    margin-top: 10px;
    padding: 10px;
    border-radius: 4px;
}

.capture-form .message.success {
    background-color: #dff0d8;
    border: 1px solid #d6e9c6;
    color: #3c763d;
}

.capture-form .message.error {
    background-color: #f2dede;
    border: 1px solid #ebccd1;
    color: #a94442;
}