Basically the way box-sizing works is that, it determines if element width should include border or not. For example -> If you have a div with width of 300px By using box-sizing: border-box like so. div { width: 300px; height: 100px; border: 10px solid blue; box-sizing: border-box; } Then the width of this div element will always be 300px Si la propriété box-sizing est définie comme content-box, la largeur complète sera plus que la largeur définie pour div. Et si la box-sizing: border-box est définie, padding et border seront compris dans width et height. Voyons un autre exemple avec deux boîtes bordurées définies côte à côte. Exemple
box-border (Tailwind) is the equivalent to box-sizing: border-box; (CSS). If you want to apply this style to all your elements, you should use @layer base in your main.css. This way you apply styles to specific elements, it's mostly used for elements such as h1 and p but it should work the same way with *. Here's the part in the documentation
The background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box. Try it If the element has no background-image or background-color , this property will only have a visual effect when the border has transparent regions or partially opaque regions (due to border-style or border Add the following highlighted line to your CSS rule in your styles.css file to set the padding to 25 pixels: [label styles.css] .yellow-div { background-color:yellow; width: 500px; padding: 25px; } Save the styles.css file and reload the index.html file in your browser. The size of the yellow box should have expanded to allow for 25 pixels of

If you have box-sizing: content-box (content-box is default), content area is "height" and "width". If you add border, content area will not change, border size will be added to the content area. If you add border, content area will not change, border size will be added to the content area.

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    • box sizing border box vs content box