diff --git "a/\347\216\213\345\207\244\346\254\243/h5+css3\344\275\234\344\270\232/2021.11.18-\345\200\274\344\270\216\345\215\225\344\275\234\344\270\232/demo01.html" "b/\347\216\213\345\207\244\346\254\243/h5+css3\344\275\234\344\270\232/2021.11.18-\345\200\274\344\270\216\345\215\225\344\275\234\344\270\232/demo01.html"
new file mode 100644
index 0000000000000000000000000000000000000000..c1f3dc2ac5b62fa1d275c67871ad4c408ed559ec
--- /dev/null
+++ "b/\347\216\213\345\207\244\346\254\243/h5+css3\344\275\234\344\270\232/2021.11.18-\345\200\274\344\270\216\345\215\225\344\275\234\344\270\232/demo01.html"
@@ -0,0 +1,80 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>属性值介绍页面</title>
+    <style>
+        * {
+            padding: 0;
+            margin: 0;
+        }
+
+        body {
+
+            width: 100%;
+            background-color: #E1E1E1;
+        }
+
+        :root {
+            --red: 44;
+            --green: 135;
+            --blue: 255;
+            --threshold: 0.5;
+            --border-threshold: 0.8;
+        }
+
+
+
+        #btn {
+            width: 400px;
+            height: 150px;
+            border: none;
+            font-size: 100%;
+            padding: 50px 100px;
+            margin: 20px;
+        }
+
+        #btn {
+            background-color: rgb(var(--red), var(--green), var(--blue));
+            --r: calc(var(--red) * 0.2126);
+            --g: calc(var(--green) * 0.7152);
+            --b: calc(var(--blue) * 0.0722);
+            --sum: calc(var(--r) + var(--g) + var(--b));
+            --lightness: calc(var(--sum) / 255);
+            color: hsl(0, 0%, calc((var(--lightness) - var(--threshold)) * -999999%));
+            --border-alpha: calc((var(--lightness) - var(--border-threshold)) * 100);
+        }
+    </style>
+
+<body>
+    <div>
+        <button id="btn">rgb(108,87,106)</button>
+    </div>
+
+    R：<input type="range" min="0" max="255" value="108" name="red" onchange="change()">
+    G：<input type="range" min="0" max="255" value="87" name="green" onchange="change()">
+    B：<input type="range" min="0" max="255" value="106" name="blue" onchange="change()">
+
+    <script>
+        var eleRanges = document.querySelectorAll('input[type="range"]');
+        Array.from(eleRanges).forEach(function (range) {
+            range.addEventListener('input', function () {
+                document.documentElement.style.setProperty('--' + this.name, this.value);
+            });
+        });
+
+        function change() {
+            var value1 = document.querySelectorAll('input')[0].value;
+            var value2 = document.querySelectorAll('input')[1].value;
+            var value3 = document.querySelectorAll('input')[2].value;
+            let btn = document.getElementById('btn');
+            btn.textContent = 'rgb(' + value1 + ',' + value2 + ',' + value3 + ')';
+        }
+
+
+    </script>
+</body>
+
+</html>
\ No newline at end of file
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diff --git "a/\347\216\213\345\207\244\346\254\243/h5+css3\344\275\234\344\270\232/2021.11.19-\345\270\203\345\261\200\344\275\234\344\270\232/index.html" "b/\347\216\213\345\207\244\346\254\243/h5+css3\344\275\234\344\270\232/2021.11.19-\345\270\203\345\261\200\344\275\234\344\270\232/index.html"
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index 0000000000000000000000000000000000000000..72d5ad556d0e10cb73df13bd6ec039c70ce267cc
--- /dev/null
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@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>多列布局</title>
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
+
+        body,
+        html {
+            width: 100%;
+            height: 100%;
+            background: url(./img/1.jpg)no-repeat;
+            background-size: 100%;
+
+        }
+
+        .content {
+            width: 100%;
+            column-count: 5;
+            column-gap: 0;
+        }
+
+        .content div {
+            border: 5px solid skyblue;
+            margin: 0 2px 2px;
+        }
+
+        .content div img {
+            width: 100%;
+        }
+    </style>
+</head>
+
+<body>
+    <div class="content">
+        <div>
+            <img src="./img/01.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/02.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/03.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/04.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/05.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/06.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/07.jpg" alt="">
+        </div>
+        <div>
+            <img src="./img/08.jpg" alt="">
+        </div>
+    </div>
+
+</body>
+
+</html>
\ No newline at end of file
