how to scale image size with css code example

Example 1: Scaling Images and Videos css

.container {
  width: 50%;
  height: 200px;
  overflow: hidden;
}

.container img {
  max-width: 100%;
  height: auto;
  display: block;
}

Example 2: CSS shrink image

<div style="width: 200px; height: 200px;">
<img src="imagen\imagen1.jpg" style="width: 100px; height: 100px;"/>
</div>