The Math.round() static method returns the value of a number rounded to the nearest integer.

The round() CSS function returns a rounded number based on a selected rounding strategy. Authors should use a custom CSS property (e.g., --my-property) for the rounding value, interval, or both; using the round() function is redundant if these have known values.

round () CSS function - CSS | MDN - MDN Web Docs

La fonction Math.round() retourne la valeur d'un nombre arrondi Ă  l'entier le plus proche.

The round() method of Temporal.Instant instances returns a new Temporal.Instant object representing this instant rounded to the given unit.

The border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.

The Math.fround() static method returns the nearest 32-bit single precision float representation of a number.

In this lesson, we will take a look at some of the creative things you can do with CSS backgrounds and borders. From adding gradients, background images, and rounded corners, backgrounds and borders are the answer to a lot of styling questions in CSS.

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