.no-radius{
  border-radius: 0 !important;
}
.no-r-t{
  @include border-top-radius(0);
}
.no-r-r{
  @include border-right-radius(0);
}
.no-r-b{
  @include border-bottom-radius(0);
}
.no-r-l{
  @include border-left-radius(0);
}

.r{
  border-radius: $border-radius-base;
}
.r-t{
  @include border-top-radius($border-radius-base);
}
.r-r{
  @include border-right-radius($border-radius-base);
}
.r-b{
  @include border-bottom-radius($border-radius-base);
}
.r-l{
  @include border-left-radius($border-radius-base);
}
.r-2x{
  border-radius: $border-radius-base * 2;
}
.r-3x{
  border-radius: $border-radius-base * 3;
}