body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa; 
}

h1 {
    margin-top: 20px;
}

.calculator p {
    text-align: center;
    font-size: 16px;
}

#graph {
    margin-top: 20px;
    width: 100%;
    height: 400px; 
}


.modal-body {
    overflow-x: auto;
}