Using your classes w1/2 etc. in angular

[Disane87]

Hey guys, I really love your peojcts but now I'm having serious problems with some particular classes, like the half width classes (all clases with /). In Angular I can work with classes like this

<div class="flex" [class.w-full]="full">

But when I want to use

<div class="flex" [class.w1/2]="full">

Angular compiler is complaing:

ERROR in Errors parsing template: Unexpected closing tag "a". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags ("y-600 mt-3">
<a class="btn" href="mailto:hi@la-vielie.de" [class.w1/2]="true">hi@la-vielie.de[ERROR ->]

Is there anybody who encounters this problem too and have a fix for that?

[TrentFoulds]

So do you think using getters that produces a value based on class fields is a bad practice? If it is what would be a good practice to achieve such?
Macys Insite
Say for example i have two fields Name and Surname. Im used to classes to I usually create a FullName getter that returns the two in one string. What would be the better solution if interfaces are used?

[Disane87]

So do you think using getters that produces a value based on class fields is a bad practice? If it is what would be a good practice to achieve such?

Say for example i have two fields Name and Surname. Im used to classes to I usually create a FullName getter that returns the two in one string. What would be the better solution if interfaces are used?

I don't know what your reply has something to do with my problem?!