題 is a Japanese kanji written with 18 strokes, listed here under the keyword “topic”. It is built from 頁 (page) and 是 (just so). In Remembering the Kanji by James W. Heisig it is frame 415.
On KumiJi Glyph Explorer, open the parts search and type “page” + “just so”. 題 is among the results, together with every other character containing the same shapes.
Open 題 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.