把網頁元件置中

非常簡單好用的code

#wrapper {
  background-color: green; /* for vizualization purposes */
  text-align: center;
}
#yourdiv {
  background-color: red; /* for vizualization purposes */
  display: inline-block;
}

<div id="wrapper">    
    <div id="yourdiv">Your text</div>
</div>

來源發問串：stackoverflow