#class_form {
    margin: 0;
    padding: 15px;
    background-color: whitesmoke;
    border: 1px solid silver;
}

#class_mistake {
	font-weight: bold;
	color: red;
	padding: 0 0 15px 0;
}
.class_row {
    border-bottom: 1px solid silver;
    padding: 4px 0;
}