html,body{ height:100%; }
body{ background:#4A90E2; display:flex; align-items:center; }

textarea{  
  display:block;
  box-sizing: padding-box;
  overflow:hidden;

  padding:10px;
  width:250px;
  font-size:14px;
  margin:50px auto;
  border-radius:6px;
  box-shadow:2px 2px 8px rgba(0,0,0,.3);
  border:0;
}