body { 
    font-family: Arial, sans-serif; 
    margin: 20px; 
}
.form-group { 
    margin-bottom: 15px; 
}
label { 
    display: block; 
    margin-bottom: 5px; 
}
select, input { 
    width: 200px; 
    padding: 5px; 
}
#result { 
    margin-top: 20px; 
}
.error { 
    color: red; 
}
.links { 
    margin-top: 10px; 
}