I would like to target Edge and have flexbox behave simliar to Firefox 33 / Chrome, for more detail see this question.
Can one target Edge in CSS?
To target Edge (version < 79), we can check for -ms-ime-align
support, Edge being the only Microsoft browser that supports this property:
@supports (-ms-ime-align: auto) {
.selector {
color: red;
}
}
Or this one-liner (that one works on Edge and all IEs also):
_:-ms-lang(x), .selector { color: red; }
Further explanation, including variants to support specific versions of Edge, can be found in this article.
For Edge version > 78, since its rendering engine (browser engine) changed to Blink, which is the Chrome's rendering engine, it should behave like Chrome.