How to make beautiful bulk editing of posts on bootstrap?

Question

css

It is necessary to make a beautiful form for mass editing of records.
For example, a product has characteristics. A feature has a name and value fields.
It turns out we display in the form of a table where in the header are the names of the fields, and in the cells there are inputs for entering values, it may also be necessary to add new records, there should be some button "Add characteristic".

I can do it myself, just maybe someone has met a beautiful implementation of this.
Thanks in advance.