CSS 粘性标题

我在主页上添加了一个粘性标题，但是粘性标题似乎位于页面上其余内容的后面，因此当我向下滚动页面时，图像和文本位于标题顶部，有没有办法停止这个？

这是我的代码：

<style>
/* Reset body padding and margins */
body
{
    margin: 0;
    padding: 0;
}

/* Make Header Sticky */
#header_container
{
    background: #827878;
    border: 1px solid #666;
    height: 60px;
    left: 0;
    position: fixed;
    width: 100%;
    top: 0;
}

#header
{
    line-height: 60px;
    margin: 10 auto;
    width: 940px;
    text-align: left;
    font-size: 26px;
    color: #f5f5f5;
    line-height: 28px;
    margin-bottom: 14px;
    font-family: 'Source Sans Pro',sans-serif;
}

/* CSS for the content of page. I am giving top and bottom 
   padding of 80px to make sure the header and footer 
   do not overlap the content. */
#container
{
    margin: 0 auto;
    overflow: auto;
    padding: 80px 0;
    width: 940px;
}

#content
{
}

/* Make Footer Sticky */
#footer_container
{
    background: #eee;
    border: 1px solid #666;
    bottom: 0;
    height: 60px;
    left: 0;
    position: fixed;
    width: 100%;
}

#footer
{
    line-height: 60px;
    margin: 0 auto;
    width: 940px;
    text-align: center;
}
</style>


<!-- BEGIN: Sticky Header -->
<div id="header_container">
    <div id="header">
        Header Content
    </div>
</div>
<!-- END: Sticky Header -->

添加此代码：添加z-index: 1000同时#header_container & z-index: 1001 in #header styles.

#header_container { 
    position: fixed;
    top: 0px;
    left: 0px;
    z-index: 1000;
}

#header {
    z-index: 1001;
}