disable textarea resize

textarea {
  resize: none;
}

<textarea class="myTextArea"></textarea>
<style>
  .myTextArea {
    resize: none;
  }
</style>

textarea {   /* for all text* area elements */
  resize: none;
}

#foo {                  /* for particular id */
  resize: none;
}

<textarea style="resize: none;"></textarea>