Html msg values as SVG that size is 12px.
Html msg
ref: https://primer.style/octicons/alert-fill-12
ref: https://primer.style/octicons/check-circle-fill-12
ref: https://primer.style/octicons/chevron-down-12
ref: https://primer.style/octicons/chevron-right-12
ref: https://primer.style/octicons/no-entry-fill-12
ref: https://primer.style/octicons/x-circle-fill-12
ref: https://primer.style/octicons/alert-fill-12