在我的网站http://goo.gl/BcJtC部分“关于我们”我希望与行星的图片在 DIV 中间水平对齐。我试过 text-align:center; 但它不起作用。任何想法？谢谢
HTML
<div class="section" id="plan-activite">
<div id="activity-container">
<div id="activity-left"><span class="activity-title">About Us</span><br /><img src="images/planet-water.jpg" class="activity-planet" alt="Picture" /></div>
<div id="activity-right"><p><span class="activity-conclusion">XYZ, naturlig mineralvann, ren natur</span></p><br /><p>XXZ AS was founded May 2011sdqsd.</p><br/>
</div>
</div>
</div><!--END page3-->
CSS
#activity-container
{
width:90%;
background-color:#FFFFFF;
Height:400px;
margin-left: auto;
margin-right: auto;
opacity:0.95;
filter:alpha(opacity=95); /* For IE8 and earlier */
border: 1px solid #efefef;
background: #fff;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
}
#activity-left {
color:#000;
margin: 0 auto;
border-style:solid;
border-right-color:#666;
padding:15px;
width: 30%;
float: left;
position: relative;
}
#activity-right {
font:12px 'Open Sans', "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
font-weight:400;
margin: O auto;
padding:15px;
color:#000;
width: 60%;
float: left;
position: relative;
text-align:justify;
-moz-column-count: 1;
-moz-column-gap: 1.5em;
-moz-column-rule: 1px solid #c4c8cc;
-webkit-column-count: 1;
-webkit-column-gap: 1.5em;
-webkit-column-rule: 1px solid #c4c8cc;
}
.activity-planet
{
text-align:center;
margin-top:20px;
margin-left:20px;
}