h1标签小于h2,都是insde一个section标签

我的h1标签是insode的一个标签,比h2标签小.当在section标签外面时,h1标签的大小正确.我一直在浏览我的CSS页面,但没有发现会导致这种情况发生的事情.这是我的CSS页面:

body 
{
    font: 100%/1.4 Verdana, Arial, Helvetica, sans-serif;
    background-color: #42413C;
    margin: 0;
    padding: 0;
    color: #000;
    background-image: url(images/mass_effect_1_citadel_dreamscene_by_droot1986-d5sw7hu.jpg);
}

a img 
{
    border: none;
}

.container 
{
    width: 960px;
    background-color: #192370;
    margin: 0 auto;
}

header 
{
    background-color: #050a2e;
}

.sidebar1 
{
    float: left;
    width: 175px;
    background-color: #2236d1;
    padding-bottom: 10px;
    border: solid thin black;
    text-align: center;
}

.content 
{
    padding: 10px 0;
    width: 780px;
    float: right;
    border: solid thin black;
}

footer 
{
    padding: 10px 0;
    background-color: #050a2e;
    position: relative;
    clear: both;
    text-align: center;
}

header, section, footer, aside, article, figure 
{
    display: block;
    color: white;
}

a:link
{
    text-decoration: none;
    color: #d1bd22;
    font-size: 1.3em;
}

a:visited
{
    text-decoration: none;
    color: white;
    font-size: 1.3em;
}

a:hover
{
    text-decoration: underline;
    color: #d1bd22;
    font-size: 1.3em;
}

a:active
{
    text-decoration: underline;
    color: white;
    font-size: 1.3em;
}

任何帮助将不胜感激