how to alter the size of an image with css code example

Example 1: css change image width

/*Search Term: "CSS change image width"*/

img {
  width: /*Add width here*/;
}

/*Example*/
img {
  width: 200px;
}

Example 2: CSS change image height

/*Search Term: "CSS change image height"*/

img {
  height: /*Add height here*/;
}

/*Example*/
img {
  height: 200px;
}