幕 is a Japanese kanji written with 13 strokes, listed here under the keyword “curtain”. It is built from 巾 (towel) and 莫 (shalt). In Remembering the Kanji by James W. Heisig it is frame 437.
On KumiJi Glyph Explorer, open the parts search and type “towel” + “shalt”. 幕 is among the results, together with every other character containing the same shapes.
Open 幕 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.