Used to target and apply styles to specific HTML elements on a web page.
CSS selectors allow you to define rules that determine which elements should receive a particular style.
THere are 4 selectors use din css

1. Universal Selector (*)
2. Type Selector
3. Class Selector (.classname)
4. ID Selector (#idname)

/* Target all paragraphs inside a div with class "content" */
div.content p {
  margin: 10px;
  color: green;
}

Targets all elements on the page.
Rarely used due to its broad scope.
Syntax: * { margin: 0; padding: 0; }

* {
  margin: 0;
  padding: 0;
  font-size: 12px;
}

Targets elements of a specific HTML tag.
Syntax: p { font-size: 16px; }

p {
  font-size: 16px;
}

Targets elements with a specific class attribute.
Class names start with a dot (.) followed by the class name.
Syntax: .highlight { background-color: yellow; }

.highlight {
  background-color: yellow;
}

Targets a single element with a specific ID attribute.
ID names start with a hash (#) followed by the ID name.
Should be unique within the page.
Syntax: #header { color: blue; }

#header {
  color: blue;
}

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