The CSS property `all` is a shorthand property that allows you to reset or set multiple individual CSS properties simultaneously to their initial or inherited values. It essentially applies a uniform value across all CSS properties. The `all` property is particularly useful when you want to reset styles or quickly apply a uniform style across an element without specifying each individual property separately.
Here’s the syntax for the `all` property:
“`css
selector {
all: initial | inherit | unset;
}
“`
– `initial`: This resets all properties to their initial values.
– `inherit`: This applies the same value as the parent element.
– `unset`: This resets all properties to their inherited values if they inherit from their parent, otherwise, it behaves like `initial`.
Let’s look at some examples to understand how `all` works:
### Example 1: Resetting All Properties
“`css
div {
all: initial;
}
“`
In this example, all properties of the `<div>` elements will be reset to their initial values. This means that any styles applied to the `<div>` elements directly or inherited from their parent elements will be overridden.
### Example 2: Applying Uniform Styles
“`css
button {
all: unset;
padding: 10px;
background-color: lightblue;
color: white;
}
“`
In this example, the `all` property is used to unset all properties for `<button>` elements, ensuring that no inherited styles are applied. Then, specific styles for padding, background color, and text color are applied. This ensures that all `<button>` elements have consistent padding, background color, and text color, regardless of any other styles applied elsewhere.
### Example 3: Inheriting Styles
“`css
.container {
font-family: Arial, sans-serif;
}
.special {
all: inherit;
}
“`
In this example, the `.special` class will inherit all styles from its parent element, which is useful if you want a specific element to inherit styles from its parent container, ensuring consistency in typography, colors, etc.
### Example 4: Resetting Specific Properties
“`css
h1 {
all: unset;
font-size: 24px;
}
“`
In this example, the `all` property is used to unset all properties for `<h1>` elements, and then a specific font size is applied. This effectively resets all styles for `<h1>` elements except for the font size.
### Example 5: Combining with Other Properties
“`css
div {
all: initial;
margin: 0;
padding: 0;
border: 1px solid black;
}
“`
In this example, the `all` property is used to reset all properties for `<div>` elements to their initial values. Then, specific styles for margin, padding, and border are applied. This ensures that `<div>` elements have consistent border styles while resetting other properties.
In summary, the `all` property in CSS provides a convenient way to reset or set multiple CSS properties simultaneously, helping to streamline styling and ensure consistency across elements. However, it should be used judiciously, as resetting all properties may lead to unintended consequences or loss of desired styles.