Twitter bootstrap caret size

Question

I have a caret like this:

Answer 1

For those looking for Bootstrap 4 Alpha 6 Support, you just have to change the selector to .dropdown-toggle::after and override what's coming from "_nav.scss" like so:

.dropdown-toggle::after {
    display: inline-block; /* Default */
    width: 0; /* Default */
    height: 0; /* Default */
    margin-left: .3em; /* Default */
    vertical-align: middle; /* Default */
    content: ""; /* Default */
    border-top: .6em solid; /* caret size */
    border-right: .6em solid transparent; /* caret size */
    border-left: .6em solid transparent; /* caret size */
}

Hope this helps those exploring Bootstrap 4 Alpha 6