.dropdown-menu {\n    top: 0;\n    right: 100%;\n    left: auto;\n    margin-top: 0;\n    margin-right: $dropdown-spacer;\n  }\n\n  .dropdown-toggle {\n    @include caret(left);\n    &::before {\n      vertical-align: 0;\n    }\n  }\n}\n\n// When enabled Popper.js, reset basic dropdown position\n// stylelint-disable-next-line no-duplicate-selectors\n.dropdown-menu {\n  &[x-placement^=\"top\"],\n  &[x-placement^=\"right\"],\n  &[x-placement^=\"bottom\"],\n  &[x-placement^=\"left\"] {\n    right: auto;\n ...