diff --git a/01 - JavaScript Drum Kit/index-MINE.html b/01 - JavaScript Drum Kit/index-MINE.html
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+
+
+
+
+ JS Drum Kit
+
+
+
+
+
+
+
+ A
+ clap
+
+
+ S
+ hihat
+
+
+ D
+ kick
+
+
+ F
+ openhat
+
+
+ G
+ boom
+
+
+ H
+ ride
+
+
+ J
+ snare
+
+
+ K
+ tom
+
+
+ L
+ tink
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
diff --git a/01 - JavaScript Drum Kit/summary.md b/01 - JavaScript Drum Kit/summary.md
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+# Knowledge Summary
+## JS
+
+## Html
+- kbd tag for semantic reading
+- audio tag
+
+## CSS
+- background
+ ```css
+ background-size: cover;
+ background: url('./background.jpg') bottom center;
+ ```
+- flex
+ ```css
+ display: flex;
+ flex: 1;
+ align-items: center;
+ justify-content: center;
+ ```
+- vh unit is relative to viewport
+- unit
+ - vh is relative to viewport
+ - rem is relative to the font size of the root element(html)
+- transition and transform
+ ```css
+ transition: all .07s ease;
+ transform: scale(1.1);
+ ```
+- box shadow
+```css
+box-shadow: 0 0 1rem #ffc600;
+```
+
+
+