Answers for "set height and width of body html"

css image size adjust

squareImage {
  border: 1px solid #ddd;	/* thickness and color of border */
  border-radius: 4px;		/* edge rounding of border */
  width: 150px;				/* width of image (px or % or auto) */
  height: auto;				/* height of image (px or % or auto) */
}

setting height and width on body

body {
	min-height: 100vh;
	width: 100%;
}

how to make html body alway 100% height and width

html, 
body {
    height: 100%;
}