html - div with display:inline-block margin 0 auto not center

Question

<div style="display: inline-block; margin: 0 auto;">
    <input id="abc" type="button" value="button" />
</div>

I try to use the code above to set the width of equal it's content, and then center it with margin: 0 auto;

But it did not work for me on any browser. Any suggestion?

BTW, when I set the width property, it works fine.

<div style="width: 10em; margin: 0 auto;">
    <input id="abc" type="button" value="button" />
</div>

Answer 1

display:table; would position it in center too:

CSS:

  .button{
    display: table;
    margin: 0 auto;
    }

HTML:

<div class="button">
<input id="abc" type="button" value="button" />
< /div>

Note: Using inline styles is a bad practice.