.a {
  -webkit-column-break-inside: auto;
  break-inside: auto;
  -webkit-column-break-before: auto;
  break-before: auto;
  -webkit-column-break-after: auto;
  break-after: auto;
}
.b {
  -webkit-column-break-inside: avoid;
  break-inside: avoid;
}
.c {
  break-inside: avoid-column;
}
.d {
  break-inside: avoid-page;
}
.e {
  break-inside: avoid-region;
}
.f {
  break-inside: region;
}
.class {
  break-before: page;
}
.class {
  -webkit-column-break-before: avoid;
  break-before: avoid;
}
.class {
  break-before: avoid-column;
}
.class {
  -webkit-column-break-after: avoid;
  break-after: avoid;
}
.class {
  -webkit-column-break-after: always;
  break-after: column;
}
.class {
  -webkit-column-break-before: always;
  break-before: column;
}