HTMLZ conversion question re class

[LadyKate]

I am a tad confused. It appears that the classes .calibre, .calibre1, .calibre 2, etc are not standard or am I missing something.
eg
example 1
.calibre2 {
display: block;
font-size: 1.41667em;
font-weight: bold;
line-height: 1.2;
margin-bottom: 0.83em;
margin-left: 0;
margin-right: 0;
margin-top: 0.83em
}
example 2
.calibre2 {
display: block;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
margin-top: 1em
}

I am cleaning up several books and was trying to find similarities in order to streamline the process.

Understanding how calibre names the classes might help (I hope) reduce the time required

[theducks]

Originally Posted by LadyKate

I am a tad confused. It appears that the classes .calibre, .calibre1, .calibre 2, etc are not standard or am I missing something.
eg
example 1
.calibre2 {
display: block;
font-size: 1.41667em;
font-weight: bold;
line-height: 1.2;
margin-bottom: 0.83em;
margin-left: 0;
margin-right: 0;
margin-top: 0.83em
}
example 2
.calibre2 {
display: block;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
margin-top: 1em
}

I am cleaning up several books and was trying to find similarities in order to streamline the process.

Understanding how calibre names the classes might help (I hope) reduce the time required

First come (in need usage)
first served

There is no 'standard'. Although simple books do seem to have similarities

[DoctorOhh]

Originally Posted by LadyKate

I am a tad confused. It appears that the classes .calibre, .calibre1, .calibre 2, etc are not standard or am I missing something.

There is no calibre standard. Those classes you outlined as examples were substituted in while converting some book. Whatever was in the original books was moved into classes in the newly converted book according to what originally existed.