I see in bootstrap.css this code:
@media(min-width: 576px) {
.col-sm {
-ms-flex-preferred-size: 0;
flex-basis: 0;
-webkit-box-flex: 1;
-ms-flex-positive: 1;
flex-grow: 1;
max-width: 100%;
}
.....
.col-sm-2 {
-webkit-box-flex: 0;
-ms-flex: 0 0 16.666667%;
flex: 0 0 16.666667%;
max-width: 16.666667%;
}
It works for screen 576px but I need to customaize it, 640px for ex.
_variables.scss can't help me becouse there are not some variables for it. it is question. I hope it is possable to resolve without bulk duplicating code