<style> element
An HTML element to contain style information, in CSS, for a document or part of a document.
Samsung Email
Android
5.0.10.2
6.0
Mozilla Thunderbird
macOS
60.3
Fastmail
Desktop Webmail
2021-07
HEY
Desktop Webmail
2020-06
LaPoste.net
Desktop Webmail
2021-08
Mail.ru
Desktop Webmail
2020-09