css: drop support for Edge 18-

See necolas/normalize.css#793 necolas/normalize.css#830 necolas/normalize.css#780

modernize.css

@@ -39,19 +39,17 @@ h1 {
 
 /**
  * 1. Add the correct height in Firefox.
- * 2. Show the overflow in Edge and IE.
  */
 
 hr {
   height: 0; /* 1 */
-  overflow: visible; /* 2 */
 }
 
 /* Text-level semantics
    ========================================================================== */
 
 /**
- * Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+ * Add the correct text decoration in Safari.
  */
 
 abbr[title] {
@@ -129,24 +127,11 @@ textarea {
 }
 
 /**
- * Show the overflow in IE.
- * 1. Show the overflow in Edge.
- */
-
-button,
-input {
-  /* 1 */
-  overflow: visible;
-}
-
-/**
- * Remove the inheritance of text transform in Edge, Firefox, and IE.
- * 1. Remove the inheritance of text transform in Firefox.
+ * Remove the inheritance of text transform in Firefox.
  */
 
 button,
 select {
-  /* 1 */
   text-transform: none;
 }
 
@@ -187,19 +172,11 @@ fieldset {
 }
 
 /**
- * 1. Correct the text wrapping in Edge and IE.
- * 2. Correct the color inheritance from `fieldset` elements in IE.
- * 3. Remove the padding so developers are not caught out when they zero out
- *    `fieldset` elements in all browsers.
+ * Remove the padding so developers are not caught out when they zero out `fieldset` elements in all browsers.
  */
 
 legend {
-  box-sizing: border-box; /* 1 */
-  color: inherit; /* 2 */
-  display: table; /* 1 */
-  max-width: 100%; /* 1 */
-  padding: 0; /* 3 */
-  white-space: normal; /* 1 */
+  padding: 0;
 }
 
 /**
@@ -250,14 +227,6 @@ progress {
 /* Interactive
    ========================================================================== */
 
-/*
- * Add the correct display in Edge, IE 10+, and Firefox.
- */
-
-details {
-  display: block;
-}
-
 /*
  * Add the correct display in all browsers.
  */