[CHANGE] Set media range notation to prefix

My CSS compressor doesn't support "context" range notations yet.

- css/csso#464
- https://stylelint.io/user-guide/rules/media-feature-range-notation/

.stylelintrc.json

@@ -5,7 +5,7 @@
         "color-no-hex": true,
         "number-max-precision": 5,
         "no-descending-specificity": null,
-        "media-feature-range-notation": "context",
+        "media-feature-range-notation": "prefix",
         "selector-class-pattern": "_?[a-z0-9]+(-[a-z0-9]+)*$",
         "selector-id-pattern": "_?[a-z0-9]+(-[a-z0-9]+)*$",
         "selector-type-case": [

aa_intel_tool/static/aa_intel_tool/css/aa-bootstrap-fix.css

@@ -6,7 +6,7 @@
     }
 }
 
-@media all and (width >= 768px) {
+@media all and (min-width: 768px) {
     #site-body-wrapper.row {
         margin-left: -15px;
     }