How to clear inherited styles in css

CSS inheritance is a commonly used feature that allows an element to inherit the style attributes of its parent element. This feature can help us simplify the amount of code and make design easier. However, in some cases we need to clear inheritance so that applying styles in certain elements is not affected by the parent element. In this article, we will detail the concept of CSS clear inheritance and how to use it.

The concept of CSS inheritance

CSS inheritance refers to a feature in which elements inherit style attributes from parent elements. Specifically, if an element does not specify a style attribute, it will inherit that style attribute from its ancestor elements. This is a very powerful and practical mechanism in HTML and CSS because it reduces the amount of code and makes the design of websites and applications more flexible and easier.

For example, we set the title font color to red through the following CSS code:

body {
    color: black;
}

h1 {
    color: red;
}

In this example, the h1 element inherits the color style attribute in the body element, but it changes this Properties are overridden in red. This means that the h1 element will be rendered with a red font color, while other elements will continue to use a black font color.

The inheritance relationship of CSS properties is usually predefined, and there is a fixed inheritance rule for each property. Inheritance relationships are usually hierarchical, for example, child elements will inherit style attributes from parent elements and from ancestor elements. This allows style attributes to flow and be propagated between elements, which is a powerful and practical mechanism.

How to clear inheritance in CSS

Although CSS inheritance is a powerful and practical feature, in some cases, we may need to clear inheritance so that applications in certain elements are not affected by the Style properties affected by its parent element. There are some simple ways to clear inheritance and we will discuss them in detail in the following sections.

1. Using the !important keyword

The !important keyword in CSS overrides all other CSS style properties, even if they are inherited from ancestor elements. You can add the !important keyword to style properties to take precedence over inherited properties. However, using the !important keyword may cause code readability and maintainability issues because if you overuse this keyword, it will become more difficult to track and change your code.

For example, the following CSS code uses the !important keyword to clear inheritance:

h1 {
    color: red !important;
}

In this example, we use the !important keyword to override the inherited color property, setting the title font color to red. While this approach clears up inheritance, it's not always the best option.

2. Reset style properties

Some properties in CSS (such as font, padding, margin, etc.) have predefined values ​​that provide default style properties for elements . You can reset these style properties to their default values ​​to eliminate the effects of inheritance. In some cases this may be a better option because it doesn't break any other styles.

For example, the following CSS code resets the font and margins of the h1 element:

h1 {
    font: initial;
    margin: initial;
}

In this example, we reset the font and margins of the h1 element to their default values, Eliminates the effects of inheritance.

3. Use absolute units

The values ​​of CSS length and distance properties are usually relative units (such as px, em, rem, etc.), and they can be based on the size of their parent element. Make adjustments. If you change these values ​​to absolute units (e.g. cm, mm, in, etc.) you can eliminate the effect of inheritance. However, this is not always the best option as absolute units are not responsive and can cause scalability issues.

For example, the following CSS code clears the margin inheritance of the h1 element:

h1 {
    margin: 0.5in;
}

In this example, we use in as the unit and set the margin property of the h1 element to 0.5 inches, thus clearing Inherited.

Conclusion

CSS inheritance is a very powerful feature that can help us simplify CSS code and improve maintainability. However, in some cases we may need to clear inheritance in order to apply different style attributes in certain elements. Using the !important keyword, resetting style properties, or using absolute units are three simple ways to clear inheritance. However, before you decide to clear inheritance, make sure you understand the implications it may have and use the method that best suits your needs.

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