Doesn't brackets allow multiple functions to be done in css?

Question

css

I create a container... I specify:
max-heigt: 1200px
width: 100%
margin: 0 auto
Only the first one is marked in any order...

Answer 1

And who will write a semicolon after each property?

.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

And what's with the brackets? Is everything ok without it?