how to make a div rounded corners code example

Example 1: css rounded corners

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

.class {
  border-radius: 4px;
}

.circle {
  border-radius: 50%;
}

Example 2: how to round the corners of a div outline in css

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

Example 3: How to make a round corner in CSS

#roundCornerID {
    border-radius: 30%;
    width: 200px;
    height: 150px;   
}