how to move an image to the middle in html code example

Example 1: image align center

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

Example 2: html css center image

<div style="text-align: center;">
  <img scr='img/example.jpg'>
</div>

Example 3: aligning image to middle in html

<style>
.aligncenter {
    text-align: center;
}
</style>