#email-sender-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
}

.form-group input[type="text"],
.form-group textarea {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.form-group textarea {
    height: 400px; /* Increase the height of the message box */
}

.form-group input[type="checkbox"] {
    margin-left: 5px;
}

.form-group input[type="submit"] {
    padding: 10px 20px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    cursor: pointer;
}

.form-group input[type="submit"]:hover {
    background-color: #ff7300;
}