This error occurs when a block in your stylesheet opens but does not close before the end of the file. The message gives the position as a byte offset from the start of the parsed text, counting from zero.
Reported
.card {
color: blue;SW13002: unterminated CSS block at byte 27
Fixed
.card {
color: blue;
}How to fix
- Add the missing
},), or]. - Also check for an unclosed string or comment before that position. An unclosed string can make the rest of the file look like one block.