css height % code example

Example 1: javascript set div height

document.getElementById("myBtn").style.height = "50px";

Example 2: css height property

/* <length> values */
height: 300px;
height: 25em;

/* <percentage> value */
height: 75%;

/* Keyword values */
height: max-content;
height: min-content;
height: fit-content(20em);
height: auto;

/* Global values */
height: inherit;
height: initial;
height: unset;

Example 3: 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) */
}

Example 4: css 100% height

<!DOCTYPE html>
<html>
  <head>
    <title>100% height</title>
    <style>
      html,
      body {
        height: 100%;
        margin: 0;
      }
      .container {
        height: 100%;
        background: #000; /* to see the effect */
      }
    </style>
  </head>
  <body>
    <div class="container"></div>
  </body>
</html>

Example 5: width css

/*Based on viewport*/
width: 100vh;
width: 100vw;