h2 {
    color: #3963f9;
    font-size: 24px;
    margin-top : 20px;
    margin-bottom: 20px;
}

h3 {
    color: #3963f9;
    font-size: 22px;
    margin-top : 20px;
    margin-bottom: 20px;
}

p {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 10px;
}

#CourseTeacher p,
#CourseTeacher li,
#CourseIntroduction p,
#CourseIntroduction li {
    line-height: 1.5;
}

.btn-signup {
    color: white;
    padding: 10px 20px;
    margin-top: 20px;
    border: none;
}

.coursefooter {
    position: fixed;
    bottom: 0;
    width: 100%;
    display: flex;
    height: 40px; /* 您可以根据需要调整高度 */
}

.btn-phone {
    width: 25%;
    text-align: center;
    background-color: rgb(37, 84, 254); /* 您可以根据需要更改颜色 */
    color: white;
    height: 100%;
    border: none;
}

.btn-signup2 {
    width: 75%;
    text-align: center;
    color: white;
    border: none;
    height: 100%;
}
#signup-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
    background-color: #f9f9f9;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#signup-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

#signup-form input[type="hidden"] {
    display: none;
}

#signup-form input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

#signup-form select,
#signup-form textarea,
#signup-form button {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

#signup-form select[multiple] {
    height: auto;
}

#signup-form button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
}

#signup-form button:hover {
    background-color: #45a049;
}