A serious error in Bulma v1.0.0 was reported on May 5 (issue 3814 on Github). For reference, I will use the full version of "bulma.css" so you can follow along too.
Starting at line 8500, you will find:
.columns.is-mobile > .column.is-offset-one-third {
margin-inline-start: 0.3333%;
}
The problem is obvious. It should be 33.3333%. The complete fix would be:
.columns.is-mobile > .column.is-offset-one-third {
margin-inline-start: 33.3333%;
}
In version 1.0.0, a total of six errors exist related to the breakpoints of .is-offset-one-third.
Yet, the error is ignored with no fix released. An entirely new version has been released well after this bug was reported ... the error remains in v1.0.1. Using bulma.css, starting at line 8514, the error remains (as well as the other five breakpoints: total of six errors).
For a CSS framework that has made a big deal of being "curated" and building up to v1.0.0, this is a serious flaw. To ignore users to have taken the time to properly document a bug, this is inexcusable.
The correct fix: use the market leader Bootstrap or a real up-and-coming solution: Tailwind.
Both the reference works "bulma.css" are from the publicly available CDNs.