将子项附加到具有相同类名的不同元素

Using a custom CMS's "Form Builder", I complied an extensive form, with lists of checkboxes for each music "Category" to choose different songs from. The form writes the HTML in a table format, so I used the below code to convert it into an unordered list format that's to be broken down into two columns:Using a custom CMS's "Form Builder", I complied