I think this has been asked a million times, but with different definitions of the problem. And it’s probably either easy to fix or a long lasting wish from web designers and still unanswered. note: I did do a search on css float on stack, but although some look like my problem, so far I haven’t found a similar one.
What I’m trying to do will become clear if you see the attachment. I want them in rows of 3 neatly stacked under each other, where the height of each <li> item is different. In other words: the heighest <li> element in a row is leading, and the next row of items should wrap under this one. Right now the items on the new row bump into the content of a longer list item at the beginning, preventing the first item of the new row to fully float to the left.
Please note that I don’t want to solve this with php or js, I think a pure css solution must be out there… Because with php, I could of course add a class like “new-row” to it and apply a clear: both to it and it will wrap. If I want to do the same thing in CSS then I can’t without using poorly supported :nth-of-type stuff. Besides, the content block is variable in width, so sometimes there are 3 on a row and sometimes maybe only 2 or up to 6.
Who can help?

Use “display:inline-block” for LI, not “float:left”