Missing style in CSS file

In two column mode, the table doesn’t look nice because there is no definition of class .ml-clearfix
I added the following definition to make it work (with thanks to https://css-tricks.com/snippets/css/clear-fix/)

.ml-responsive-table .ml-clearfix:after {
content:””;
display:table;
clear:both;
}

https://ww.wp.xz.cn/plugins/magic-liquidizer-responsive-table/