bootstrap 5 horizontal rule

1<!-- HTML -->
2
3<!-- You can change the style of the horizontal line like this: --> 
4
5<hr style="width:50%", size="3", color=black>  
6
7
8<!-- Or like this: -->
9
10<hr style="height:2px; width:50%; border-width:0; color:red; background-color:red">
11
12

1hr {
2  margin-top: 1rem;
3  margin-bottom: 1rem;
4  border: 0;
5  border-top: 1px solid rgba(0, 0, 0, 0.1);
6}

1<hr style="height:2px; width:50%; border-width:0; color:red; background-color:red">