first letter uppercase css select tag don't work code example

Example 1: How do you make each word in a text start with a capital letter?

h1 {
  text-transform: capitalize;
}

Example 2: input uppercase with css

input { 
    text-transform: uppercase;
}

Example 3: input uppercase with css

<input oninput="let p = this.selectionStart; this.value = this.value.toUpperCase();this.setSelectionRange(p, p);" />