diff --git a/src/css.js b/src/css.js
index 72a807bfc..3e7073507 100644
--- a/src/css.js
+++ b/src/css.js
@@ -151,7 +151,7 @@ function getWidthOrHeight( elem, dimension, extra ) {
 		// Support: IE 10 - 11+
 		// IE misreports `getComputedStyle` of table rows with width/height
 		// set in CSS while `offset*` properties report correct values.
-		// Support: Firefox 70+
+		// Support: Firefox 70 - 135+
 		// Firefox includes border widths
 		// in computed dimensions for table rows. (gh-4529)
 		( !support.reliableTrDimensions() && nodeName( elem, "tr" ) ) ) &&
diff --git a/src/css/curCSS.js b/src/css/curCSS.js
index b0f0a7555..942017bbe 100644
--- a/src/css/curCSS.js
+++ b/src/css/curCSS.js
@@ -30,10 +30,9 @@ export function curCSS( elem, name, computed ) {
 
 		if ( isCustomProp && ret ) {
 
-			// Support: Firefox 105+, Chrome <=105+
+			// Support: Firefox 105 - 135+
 			// Spec requires trimming whitespace for custom properties (gh-4926).
-			// Firefox only trims leading whitespace. Chrome just collapses
-			// both leading & trailing whitespace to a single space.
+			// Firefox only trims leading whitespace.
 			//
 			// Fall back to `undefined` if empty string returned.
 			// This collapses a missing definition with property defined
diff --git a/src/css/support.js b/src/css/support.js
index 93459c6b6..bca0b6dbf 100644
--- a/src/css/support.js
+++ b/src/css/support.js
@@ -25,12 +25,7 @@ support.reliableTrDimensions = function() {
 		tr = document.createElement( "tr" );
 
 		table.style.cssText = "position:absolute;left:-11111px;border-collapse:separate";
-		tr.style.cssText = "box-sizing:content-box;border:1px solid";
-
-		// Support: Chrome 86+
-		// Height set through cssText does not get applied.
-		// Computed height then comes back as 0.
-		tr.style.height = "1px";
+		tr.style.cssText = "box-sizing:content-box;border:1px solid;height:1px";
 		div.style.height = "9px";
 
 		// Support: Android Chrome 86+
diff --git a/src/selector/rbuggyQSA.js b/src/selector/rbuggyQSA.js
index b056ffe75..acd277554 100644
--- a/src/selector/rbuggyQSA.js
+++ b/src/selector/rbuggyQSA.js
@@ -25,7 +25,6 @@ if ( isIE ) {
 
 if ( !support.cssHas ) {
 
-	// Support: Chrome 105 - 110+, Safari 15.4 - 16.3+
 	// Our regular `try-catch` mechanism fails to detect natively-unsupported
 	// pseudo-classes inside `:has()` (such as `:has(:contains("Foo"))`)
 	// in browsers that parse the `:has()` argument as a forgiving selector list.
diff --git a/test/unit/css.js b/test/unit/css.js
index e232f5db0..8a96fb357 100644
--- a/test/unit/css.js
+++ b/test/unit/css.js
@@ -1379,7 +1379,7 @@ testIframe(
 	function( assert, jQuery, window, document, widthBeforeSet, widthAfterSet ) {
 		assert.expect( 2 );
 
-		// Support: Firefox 126+
+		// Support: Firefox 126 - 135+
 		// Newer Firefox implements CSS zoom in a way it affects
 		// those values slightly.
 		assert.ok( /^100(?:|\.0\d*)px$/.test( widthBeforeSet ), "elem.css('width') works correctly with browser zoom" );
@@ -1812,14 +1812,9 @@ QUnit.testUnlessIE( "css(--customProperty)", function( assert ) {
 
 	var div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
 		$elem = jQuery( "<div>" ).addClass( "test__customProperties" )
-			.appendTo( "#qunit-fixture" ),
-		webkitOrBlink = /webkit\b/i.test( navigator.userAgent ),
-		expected = 20;
+			.appendTo( "#qunit-fixture" );
 
-	if ( webkitOrBlink ) {
-		expected -= 2;
-	}
-	assert.expect( expected );
+	assert.expect( 20 );
 
 	div.css( "--color", "blue" );
 	assert.equal( div.css( "--color" ), "blue", "Modified CSS custom property using string" );
@@ -1848,13 +1843,15 @@ QUnit.testUnlessIE( "css(--customProperty)", function( assert ) {
 	assert.equal( $elem.css( "--prop5" ), "val5", "Multiple Following whitespace trimmed" );
 	assert.equal( $elem.css( "--prop6" ), "val6", "Preceding and Following whitespace trimmed" );
 	assert.equal( $elem.css( "--prop7" ), "val7", "Multiple preceding and following whitespace trimmed" );
+	assert.equal( $elem.css( "--prop8" ), "\"val8\"", "Works with double quotes" );
 
-	// Support: Chrome <=49 - 73+, Safari <=9.1 - 12.1+
-	// Chrome treats single quotes as double ones.
-	// Safari treats double quotes as single ones.
-	if ( !webkitOrBlink ) {
-		assert.equal( $elem.css( "--prop8" ), "\"val8\"", "Works with double quotes" );
+	// Support: Safari <=9.1 - 18.1+
+	// Safari converts single quotes to double ones.
+	if ( !/\bapplewebkit\/605\.1\.15\b/i.test( navigator.userAgent ) ) {
 		assert.equal( $elem.css( "--prop9" ), "'val9'", "Works with single quotes" );
+	} else {
+		assert.equal( $elem.css( "--prop9" ).replace( /"/g, "'" ), "'val9'",
+			"Works with single quotes, but they may be changed to double ones" );
 	}
 
 	assert.equal( $elem.css( "--prop10" ), "val10", "Multiple preceding and following escaped unicode whitespace trimmed" );
diff --git a/test/unit/dimensions.js b/test/unit/dimensions.js
index 6b0c9c798..93cdb3d82 100644
--- a/test/unit/dimensions.js
+++ b/test/unit/dimensions.js
@@ -345,29 +345,6 @@ QUnit.test( "child of a hidden elem (or unconnected node) has accurate inner/out
 	$divNormal.remove();
 } );
 
-QUnit.test( "getting dimensions shouldn't modify runtimeStyle see trac-9233", function( assert ) {
-	assert.expect( 1 );
-
-	var $div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
-		div = $div.get( 0 ),
-		runtimeStyle = div.runtimeStyle;
-
-	if ( runtimeStyle ) {
-		div.runtimeStyle.marginLeft = "12em";
-		div.runtimeStyle.left = "11em";
-	}
-
-	$div.outerWidth( true );
-
-	if ( runtimeStyle ) {
-		assert.equal( div.runtimeStyle.left, "11em", "getting dimensions modifies runtimeStyle, see trac-9233" );
-	} else {
-		assert.ok( true, "this browser doesn't support runtimeStyle, see trac-9233" );
-	}
-
-	$div.remove();
-} );
-
 QUnit.test( "table dimensions", function( assert ) {
 	assert.expect( 2 );
 
diff --git a/test/unit/event.js b/test/unit/event.js
index 89d48c420..474699105 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -1438,7 +1438,7 @@ QUnit.test( "Submit event can be stopped (trac-11049)", function( assert ) {
 	form.remove();
 } );
 
-// Support: iOS <=7 - 12+
+// Support: iOS <=7 - 18+
 // iOS has the window.onbeforeunload field but doesn't support the beforeunload
 // handler making it impossible to feature-detect the support.
 QUnit[ /(ipad|iphone|ipod)/i.test( navigator.userAgent ) ? "skip" : "test" ](
diff --git a/test/unit/manipulation.js b/test/unit/manipulation.js
index 8300b4b9c..f4941b890 100644
--- a/test/unit/manipulation.js
+++ b/test/unit/manipulation.js
@@ -3020,8 +3020,7 @@ QUnit.test( "Sanitized HTML doesn't get unsanitized", function( assert ) {
 
 	var container,
 		counter = 0,
-		oldIos = /iphone os (?:8|9|10|11|12)_/i.test( navigator.userAgent ),
-		assertCount = oldIos ? 12 : 13,
+		assertCount = 13,
 		done = assert.async( assertCount );
 
 	assert.expect( assertCount );
@@ -3065,12 +3064,7 @@ QUnit.test( "Sanitized HTML doesn't get unsanitized", function( assert ) {
 
 	test( "<option><style></option></select><img src=url404 onerror=xss(11)></style>" );
 
-	// Support: iOS 8 - 12 only.
-	// Old iOS parses `<noembed>` tags differently, executing this code. This is no
-	// different to native behavior on that OS, though, so just accept it.
-	if ( !oldIos ) {
-		test( "<noembed><noembed/><img src=url404 onerror=xss(12)>" );
-	}
+	test( "<noembed><noembed/><img src=url404 onerror=xss(12)>" );
 } );
 
 QUnit.test( "Works with invalid attempts to close the table wrapper", function( assert ) {
diff --git a/test/unit/offset.js b/test/unit/offset.js
index 5cece84f4..bf16f7ddb 100644
--- a/test/unit/offset.js
+++ b/test/unit/offset.js
@@ -752,25 +752,15 @@ QUnit.test( "iframe scrollTop/Left (see gh-1945)", function( assert ) {
 
 	var ifDoc = jQuery( "#iframe" )[ 0 ].contentDocument;
 
-	// Support: iOS <=8 - 12+
-	// Mobile Safari resizes the iframe by its content meaning it's not possible to scroll
-	// the iframe but only its parent element.
-	if ( /iphone os|ipad/i.test( navigator.userAgent ) ) {
-		assert.equal( true, true, "Can't scroll iframes in this environment" );
-		assert.equal( true, true, "Can't scroll iframes in this environment" );
+	// Tests scrollTop/Left with iframes
+	jQuery( "#iframe" ).css( "width", "50px" ).css( "height", "50px" );
+	ifDoc.write( "<div style='width: 1000px; height: 1000px;'></div>" );
 
-	} else {
+	jQuery( ifDoc ).scrollTop( 200 );
+	jQuery( ifDoc ).scrollLeft( 500 );
 
-		// Tests scrollTop/Left with iframes
-		jQuery( "#iframe" ).css( "width", "50px" ).css( "height", "50px" );
-		ifDoc.write( "<div style='width: 1000px; height: 1000px;'></div>" );
-
-		jQuery( ifDoc ).scrollTop( 200 );
-		jQuery( ifDoc ).scrollLeft( 500 );
-
-		assert.equal( jQuery( ifDoc ).scrollTop(), 200, "$($('#iframe')[0].contentDocument).scrollTop()" );
-		assert.equal( jQuery( ifDoc ).scrollLeft(), 500, "$($('#iframe')[0].contentDocument).scrollLeft()" );
-	}
+	assert.equal( jQuery( ifDoc ).scrollTop(), 200, "$($('#iframe')[0].contentDocument).scrollTop()" );
+	assert.equal( jQuery( ifDoc ).scrollLeft(), 500, "$($('#iframe')[0].contentDocument).scrollLeft()" );
 } );
 
 } )();
diff --git a/test/unit/selector.js b/test/unit/selector.js
index 5fecfae94..062bad02b 100644
--- a/test/unit/selector.js
+++ b/test/unit/selector.js
@@ -858,7 +858,7 @@ QUnit.test( "pseudo - nth-child", function( assert ) {
 		);
 	} else {
 
-		// Support: Chrome 75+, Firefox 67+
+		// Support: Chrome 75 - 133+, Firefox 67 - 135+
 		// Some browsers mark disconnected elements as matching `:nth-child(n)`
 		// so let's skip the test.
 		assert.ok( "skip", "disconnected elements match ':nth-child(n)' in Chrome/Firefox" );
@@ -912,7 +912,7 @@ QUnit.test( "pseudo - nth-last-child", function( assert ) {
 		);
 	} else {
 
-		// Support: Chrome 75+, Firefox 67+
+		// Support: Chrome 75 - 133+, Firefox 67 - 135+
 		// Some browsers mark disconnected elements as matching `:nth-last-child(n)`
 		// so let's skip the test.
 		assert.ok( "skip", "disconnected elements match ':nth-last-child(n)' in Chrome/Firefox" );
@@ -954,7 +954,7 @@ QUnit[ QUnit.jQuerySelectors ? "test" : "skip" ]( "pseudo - has", function( asse
 		"div:has(div:has(div:not([id])))",
 		[ "moretests", "t2037", "fx-test-group", "fx-queue" ] );
 
-	// Support: Safari 15.4+, Chrome 105+
+	// Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only
 	// `qSA` in Safari/Chrome throws for `:has()` with only unsupported arguments
 	// but if you add a supported arg to the list, it will run and just potentially
 	// return no results. Make sure this is accounted for. (gh-5098)
diff --git a/test/unit/support.js b/test/unit/support.js
index bf3f4d26d..0961f3183 100644
--- a/test/unit/support.js
+++ b/test/unit/support.js
@@ -84,18 +84,10 @@ testIframe(
 				cssHas: true,
 				reliableTrDimensions: false
 			},
-			chrome_111: {
-				cssHas: false,
-				reliableTrDimensions: true
-			},
 			chrome: {
 				cssHas: true,
 				reliableTrDimensions: true
 			},
-			safari_16_3: {
-				cssHas: false,
-				reliableTrDimensions: true
-			},
 			safari: {
 				cssHas: true,
 				reliableTrDimensions: true
@@ -104,11 +96,7 @@ testIframe(
 				cssHas: true,
 				reliableTrDimensions: false
 			},
-			ios_14_15_3: {
-				cssHas: true,
-				reliableTrDimensions: true
-			},
-			ios_15_4_16_3: {
+			ios_16_3: {
 				cssHas: false,
 				reliableTrDimensions: true
 			},
@@ -127,22 +115,16 @@ testIframe(
 
 	if ( document.documentMode ) {
 		expected = expectedMap.ie_11;
-	} else if ( /\b(?:headless)?chrome\/(?:10\d|11[01])\b/i.test( userAgent ) ) {
-		expected = expectedMap.chrome_111;
 	} else if ( /\b(?:headless)?chrome\//i.test( userAgent ) ) {
 
 		// Catches Edge, Chrome on Android & Opera as well.
 		expected = expectedMap.chrome;
 	} else if ( /\bfirefox\//i.test( userAgent ) ) {
 		expected = expectedMap.firefox;
-	} else if ( /\biphone os (?:14_|15_[0123])/i.test( userAgent ) ) {
-		expected = expectedMap.ios_14_15_3;
-	} else if ( /\biphone os (?:15_|16_[0123])/i.test( userAgent ) ) {
-		expected = expectedMap.ios_15_4_16_3;
+	} else if ( /\biphone os 16_[0123]/i.test( userAgent ) ) {
+		expected = expectedMap.ios_16_3;
 	} else if ( /\b(?:iphone|ipad);.*(?:iphone)? os \d+_/i.test( userAgent ) ) {
 		expected = expectedMap.ios;
-	} else if ( /\bversion\/(?:15|16\.[0123])(?:\.\d+)* safari/i.test( userAgent ) ) {
-		expected = expectedMap.safari_16_3;
 	} else if ( /\bversion\/\d+(?:\.\d+)+ safari/i.test( userAgent ) ) {
 		expected = expectedMap.safari;
 	}