alt Hacker NewsYes, that's why Servo is so exciting.
It doesn't have to implement _all_ the standards, just a subset that is compatible with the full set. So that if you can develop an app within that subset and have it working in other browsers. But not necessarily vice versa.
If you're going by binary size then Servo is already as big as other browsers. 106 MB excluding dependencies, or 274 MB including dependencies.