Summary  
The CSS box-sizing property controls how an element’s total width and height are calculated by either including padding and border within the specified dimensions (border-box) or applying them outside the content area (content-box).  

General domain of usage  
Web layout and styling

The `box-sizing` property is used to control how the total size of an element is calculated, specifically concerning its `width` and `height`. There are three possible values for the `box-sizing` property. Let's break down what each of these values means:
```css
box-sizing: content-box | border-box | inherit;
```

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<!DOCTYPE html>
<html lang="en">
  <head>
    <style>
      /* Current focus */
      /* Default behavior */
      .content-box {
        box-sizing: content-box;
        background-color: #e1f5fe;
      }

      /* Recommended modern behavior */
      .border-box {
        box-sizing: border-box;
        background-color: #fff3e0;
      }

      /* Additional styles for better appearance (not the current focus) */
      .wrapper {
        display: flex;
        justify-content: center;
        gap: 40px;
        padding: 10px;
        background-color: #f4f4f8;
        box-sizing: border-box;
      }

      .card {
        width: 200px;
        height: 200px;
        padding: 20px;
        border: 4px solid #4a90e2;
        border-radius: 12px;
        font-family: 'Fira Sans', sans-serif;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        font-size: 15px;
        line-height: 1.5;
        transition: all 0.3s ease;
      }

      h3 {
  text-align: center;
  margin-top: 0;
  font-size: 20px;
  font-weight: 600;
  color: #333;
}
    </style>
  </head>
  <body>
    <div class="wrapper">
      <div class="card content-box">
        <h3>content-box</h3>
        <p>
          The padding and border are added on top of the width and height. So
          the total size becomes larger than 200px.
        </p>
      </div>

      <div class="card border-box">
        <h3>border-box</h3>
        <p>
          The padding and border are included in the 200px width and height. The
          box stays exactly 200px.
        </p>
      </div>
    </div>
  </body>
</html>


## inherit
- The `inherit` value allows an element's `box-sizing` property to inherit its value from its parent element;
- This means that the `box-sizing` behavior of the current element is determined by the `box-sizing` property of its parent element;
- It can help ensure a consistent `box-sizing` behavior throughout a document by setting it on a parent container.

What is the default value for the `box-sizing` property?

If a parent element has `box-sizing: border-box` and a child element has `box-sizing: inherit`, what value will the child element use for the `box-sizing` property?

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Understanding Box Sizing in CSS

Output

inherit

1. What is the default value for the `box-sizing` property?

2. If a parent element has `box-sizing: border-box` and a child element has `box-sizing: inherit`, what value will the child element use for the `box-sizing` property?

Understanding Box Sizing in CSS

Output

inherit

1. What is the default value for the `box-sizing` property?

2. If a parent element has `box-sizing: border-box` and a child element has `box-sizing: inherit`, what value will the child element use for the `box-sizing` property?

Understanding Box Sizing in CSS

Output

inherit

1. What is the default value for the box-sizing property?

2. If a parent element has box-sizing: border-box and a child element has box-sizing: inherit, what value will the child element use for the box-sizing property?

Understanding Box Sizing in CSS

Output

inherit

1. What is the default value for the box-sizing property?

2. If a parent element has box-sizing: border-box and a child element has box-sizing: inherit, what value will the child element use for the box-sizing property?

1. What is the default value for the `box-sizing` property?

2. If a parent element has `box-sizing: border-box` and a child element has `box-sizing: inherit`, what value will the child element use for the `box-sizing` property?

1. What is the default value for the `box-sizing` property?

2. If a parent element has `box-sizing: border-box` and a child element has `box-sizing: inherit`, what value will the child element use for the `box-sizing` property?