How can you created rounded corners using CSS ? code example

Example 1: css rounded corners

/* Set rounded corners with border-radius property */

.class {
  border-radius: 4px;
}

.circle {
  border-radius: 50%;
}

Example 2: css rounded corners at top only

border-radius: 10px     10px      0           0;
            // top-left top-right bottom-right bottom-left.

Example 3: how to round the corners of a div outline in css

div {
  outline: auto;
  outline-style: round;
}