Make the demo a bit more pretty #13293

Job	Run time
Check wasm32 + wasm-bindgen	2m 23s
Check wasm32+atomics	1m 36s
cargo-deny aarch64-apple-darwin	42s
android	28s
cargo-deny aarch64-linux-android	37s
cargo-deny i686-pc-windows-gnu	39s
Format + check + test	2m 59s
cargo-deny i686-pc-windows-msvc	40s
cargo-deny i686-unknown-linux-gnu	47s
ios	31s
cargo-deny wasm32-unknown-unknown	41s
cargo-deny x86_64-apple-darwin	41s
Run tests	1m 39s
cargo-deny x86_64-pc-windows-gnu	38s
cargo-deny x86_64-pc-windows-msvc	43s
cargo-deny x86_64-unknown-linux-gnu	37s
Check Windows	2m 3s
cargo-deny x86_64-unknown-linux-musl	41s
cargo-deny x86_64-unknown-redox	38s
	19m 43s

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