Rule border-zero will enforce whether one should use 0 or none when specifying a zero border value
convention:'0'/'none'(defaults to0)
When convention: '0', the following are allowed. When convention: 'none', the following are disallowed:
.foo {
border: 0;
}
.bar {
border-right: 0;
}When convention: 'none', the following are allowed. When convention: '0', the following are disallowed:
.foo {
border: none;
}
.bar {
border-left: none;
}