body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #ffffff;

    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#main-container {
    background: rgba(227, 227, 227, 0.522);
    padding: 80px 100px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    text-align: center;
}
#title {
    margin: 0;
    font-size: 32px;
    color: #333;
}
#subtitle {
    margin: 10px 0 25px;
    color: #404040;
    font-size: 18px;
}
#btn-group {
    display: flex;
    justify-content: center;
}
#SGPA-btn, 
#CGPA-btn {
    padding: 12px 25px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: white;
    transition: 0.3s;
}
#SGPA-btn {
    background-color: #007bff;
   margin-right: 10px;
}
#CGPA-btn {
    background-color: #28a745;
}
#SGPA-btn:hover,
#CGPA-btn:hover {
    transform: scale(1.05);
    opacity: 0.9;
}