diff --git a/lib/nodes/Operator.js b/lib/nodes/Operator.js
index 46e9dd4..2fac9af 100644
--- a/lib/nodes/Operator.js
+++ b/lib/nodes/Operator.js
@@ -12,7 +12,7 @@ const { registerWalker } = require('../walker');
 
 const Node = require('./Node');
 
-const operators = ['+', '-', '/', '*', '%'];
+const operators = ['+', '-', '/', '*', '%', '=', '<=', '>=', '<', '>'];
 const operRegex = new RegExp(`([/|*}])`);
 
 class Operator extends Node {
diff --git a/test/fixtures/word.js b/test/fixtures/word.js
index 22e40e8..e25f2d4 100644
--- a/test/fixtures/word.js
+++ b/test/fixtures/word.js
@@ -13,6 +13,9 @@ module.exports = {
   snapshot: [
     'bold italic 12px \t /3 \'Open Sans\', Arial, "Helvetica Neue", sans-serif',
     '(min-width: 700px) and (orientation: \\$landscape)',
+    '(width < 700px)',
+    '(width <= 700px)',
+    '(width >= 500px) and (width <= 1200px)',
     ' \\"word\\" \\s ',
     '--color',
     '-webkit-transition',
diff --git a/test/snapshots/word.test.js.md b/test/snapshots/word.test.js.md
index 9f2bb92..ab07545 100644
--- a/test/snapshots/word.test.js.md
+++ b/test/snapshots/word.test.js.md
@@ -1354,3 +1354,681 @@ Generated by [AVA](https://avajs.dev).
         [Symbol(isClean)]: false,
       },
     ]
+
+## (width < 700px)
+
+> Snapshot 1
+
+    '('
+
+> Snapshot 2
+
+    '(width < 700px)'
+
+> Snapshot 3
+
+    [
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width < 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: '(',
+        [Symbol(isClean)]: false,
+      },
+      Word {
+        isColor: false,
+        isHex: false,
+        isUrl: false,
+        isVariable: false,
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width < 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'word',
+        value: 'width',
+        [Symbol(isClean)]: false,
+      },
+      Operator {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+          input: Input {
+            css: '(width < 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+        },
+        type: 'operator',
+        value: '<',
+        [Symbol(isClean)]: false,
+      },
+      Numeric {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 9,
+            line: 1,
+            offset: 8,
+          },
+          input: Input {
+            css: '(width < 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 9,
+            line: 1,
+            offset: 8,
+          },
+        },
+        type: 'numeric',
+        unit: 'px',
+        value: '700',
+        [Symbol(isClean)]: false,
+      },
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width < 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: ')',
+        [Symbol(isClean)]: false,
+      },
+    ]
+
+## (width <= 700px)
+
+> Snapshot 1
+
+    '('
+
+> Snapshot 2
+
+    '(width <= 700px)'
+
+> Snapshot 3
+
+    [
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width <= 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: '(',
+        [Symbol(isClean)]: false,
+      },
+      Word {
+        isColor: false,
+        isHex: false,
+        isUrl: false,
+        isVariable: false,
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width <= 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'word',
+        value: 'width',
+        [Symbol(isClean)]: false,
+      },
+      Operator {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+          input: Input {
+            css: '(width <= 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+        },
+        type: 'operator',
+        value: '<=',
+        [Symbol(isClean)]: false,
+      },
+      Numeric {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+          input: Input {
+            css: '(width <= 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+        },
+        type: 'numeric',
+        unit: 'px',
+        value: '700',
+        [Symbol(isClean)]: false,
+      },
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width <= 700px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: ')',
+        [Symbol(isClean)]: false,
+      },
+    ]
+
+## (width >= 500px) and (width <= 1200px)
+
+> Snapshot 1
+
+    '('
+
+> Snapshot 2
+
+    '(width >= 500px) and (width <= 1200px)'
+
+> Snapshot 3
+
+    [
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: '(',
+        [Symbol(isClean)]: false,
+      },
+      Word {
+        isColor: false,
+        isHex: false,
+        isUrl: false,
+        isVariable: false,
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'word',
+        value: 'width',
+        [Symbol(isClean)]: false,
+      },
+      Operator {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+        },
+        type: 'operator',
+        value: '>=',
+        [Symbol(isClean)]: false,
+      },
+      Numeric {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+        },
+        type: 'numeric',
+        unit: 'px',
+        value: '500',
+        [Symbol(isClean)]: false,
+      },
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'punctuation',
+        value: ')',
+        [Symbol(isClean)]: false,
+      },
+      Word {
+        isColor: false,
+        isHex: false,
+        isUrl: false,
+        isVariable: false,
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 18,
+            line: 1,
+            offset: 17,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 18,
+            line: 1,
+            offset: 17,
+          },
+        },
+        type: 'word',
+        value: 'and',
+        [Symbol(isClean)]: false,
+      },
+      Punctuation {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 22,
+            line: 1,
+            offset: 21,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 22,
+            line: 1,
+            offset: 21,
+          },
+        },
+        type: 'punctuation',
+        value: '(',
+        [Symbol(isClean)]: false,
+      },
+      Word {
+        isColor: false,
+        isHex: false,
+        isUrl: false,
+        isVariable: false,
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 1,
+            line: 1,
+            offset: 0,
+          },
+        },
+        type: 'word',
+        value: 'width',
+        [Symbol(isClean)]: false,
+      },
+      Operator {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 7,
+            line: 1,
+            offset: 6,
+          },
+        },
+        type: 'operator',
+        value: '<=',
+        [Symbol(isClean)]: false,
+      },
+      Numeric {
+        raws: {
+          after: '',
+          before: ' ',
+        },
+        source: {
+          end: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 10,
+            line: 1,
+            offset: 9,
+          },
+        },
+        type: 'numeric',
+        unit: 'px',
+        value: '1200',
+        [Symbol(isClean)]: false,
+      },
+      Punctuation {
+        raws: {
+          after: '',
+          before: '',
+        },
+        source: {
+          end: {
+            column: 22,
+            line: 1,
+            offset: 21,
+          },
+          input: Input {
+            css: '(width >= 500px) and (width <= 1200px)',
+            hasBOM: false,
+            id: '<input css 1>',
+            [Symbol(fromOffset cache)]: [
+              0,
+            ],
+          },
+          start: {
+            column: 22,
+            line: 1,
+            offset: 21,
+          },
+        },
+        type: 'punctuation',
+        value: ')',
+        [Symbol(isClean)]: false,
+      },
+    ]
diff --git a/test/snapshots/word.test.js.snap b/test/snapshots/word.test.js.snap
index 2e2e2e4..a9cbabf 100644
Binary files a/test/snapshots/word.test.js.snap and b/test/snapshots/word.test.js.snap differ