Please add my CSS cheatsheet

CheatSheet/CSS_Cheatsheet.md

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+# CSS Properties and Values Cheatsheet
+
+## Introduction
+
+This cheatsheet provides a quick reference for common CSS properties and values used in web development.
+
+## Selectors
+
+- **Element Selector:**
+  ```css
+  element
+  {
+    property: value;
+  }
+
+  Example: p { color: blue; }
+
+- **Class Selector:**
+  ```css
+  .classname
+  {
+    property: value;
+  }
+
+  Example: .highlight { background-color: yellow; }
+
+- **ID Selector:**
+  ```css 
+  #idname
+  {
+    property: value;
+  }
+
+  Example: #header { font-size: 24px; }
+
+- **Universal Selector:**
+  ```css
+  * {
+    property: value;
+    }
+
+  Example: * { margin: 0; }
+
+- **Descendant Selector:**
+  ```css
+  ancestor descendant
+  {
+  styles
+  }
+
+  Example: article p { font-style: italic; }
+
+- **Child Selector:**
+  ```css
+  parent > child
+  {
+   styles
+  }
+
+  Example: nav > ul { list-style-type: none; }
+
+- **Attribute Selector:**
+  ```css
+  element[attribute="value"]
+  {
+   styles
+  }
+
+  Example: input[type="text"] { width: 200px; }
+
+## Box Model
+
+- **Width and Height:**
+  ```css
+  width: value;
+  height: value;
+
+- **Margin:**
+  ```css
+  margin: top right bottom left;
+
+  Example: margin: 10px;
+
+- **Padding:**
+  ```css
+  padding: top right bottom left;
+
+  Example: padding: 10px;
+
+- **Border:**
+  ```css
+  border: width style color;
+
+  Example: border: 2px solid #000;
+
+## Typography
+
+- **Font Family:**
+  ```css
+  font-family: 'Font Name', sans-serif;
+
+  Example: font-family: 'Arial', sans-serif;
+
+- **Font Size:**
+  ```css
+  font-size: value;
+
+  Example: font-size: 16px;
+
+- **Font Weight:**
+  ```css
+  font-weight: normal | bold;
+
+- **Text Alignment:**
+  ```css
+  text-align: left | center | right;
+
+- **Line Height:**
+  ```css
+  line-height: value;
+
+  Example: line-height: 1.5;
+
+- **Text Decoration:**
+  ```css
+  text-decoration: value;
+
+  Example: text-decoration: underline;
+
+- **Text Transform:**
+  ```css
+  text-transform: value;
+
+  Example: text-transform: uppercase;
+
+## Color
+- **Color:**
+  ```css
+  color: #RRGGBB;
+
+- **Background Color:**
+  ```css
+  background-color: #RRGGBB;
+
+- **Border Color:**
+  ```css
+  border-color: value;
+
+  Example: border-color: #333;
+
+- **RGB Values:**
+  ```css
+  color: rgb(255, 0, 0);
+
+- **RGBA Values:**
+  ```css
+  background-color: rgba(255, 0, 0, 0.5);
+
+- **HSL Values:**
+  ```css
+  color: hsl(120, 100%, 50%);
+
+- **HSLA Values:**
+  ```css
+  background-color: hsla(120, 100%, 50%, 0.5);
+
+## Layout
+- **Display:**
+  ```css
+  display: block | inline | inline-block | flex | grid;
+
+- **Position:**
+  ```css
+  position: static | relative | absolute | fixed;
+
+- **Float:**
+  ```css
+  float: left | right | none;
+
+- **Visibility:**
+  ```css
+  visibility: visible | hidden | collapse;
+
+- **Clear:**
+  ```css
+  clear: left | right | both | none;
+
+- **Flexbox:**
+  ```css
+  display: flex;
+
+- **Grid:**
+  ```css
+  display: grid;
+
+## Flexbox Properties
+- **Flex Container:**
+  ```css
+  display: flex;
+
+- **Flex Direction:**
+  ```css
+  flex-direction: row | column | row-reverse | column-reverse;
+
+- **Flex Wrap:**
+  ```css
+  flex-wrap: nowrap | wrap | wrap-reverse;
+
+- **Justify Content:**
+  ```css
+  justify-content: flex-start | flex-end | center | space-between | space-around;
+
+- **Align Content:**
+  ```css
+  align-content: stretch | flex-start | flex-end | center | space-between | space-around;
+
+- **Align Items:**
+  ```css
+  align-items: stretch | flex-start | flex-end | center | baseline;
+
+## Transition and Animation
+- **Transition:**
+  ```css
+  transition: property duration timing-function delay;
+
+- **Keyframes Animation:**
+  ```css
+  @keyframes animation-name {
+  0% { property: value; }
+  100% { property: value; }
+  }
+
+  animation: animation-name duration timing-function delay iteration-count direction fill-mode;
+
+## Miscellaneous
+- **Box Shadow:**
+  ```css
+  box-shadow: h-offset v-offset blur spread color;
+
+- **Opacity:**
+  ```css
+  opacity: value; /* 0.0 to 1.0 */
+
+- **Z-Index:**
+  ```css
+  z-index: value;
+
+- **Overflow:**
+  ```css
+  overflow: visible | hidden | scroll | auto;
+
+- **Cursor:**
+  ```css
+  cursor: pointer | default | text | grab | not-allowed;
+
+## Conclusion
+This cheatsheet covers some fundamental CSS properties and values. Experiment and explore these to enhance the styling of HTML documents.
+
+