.wrapper {
    width: 1200px;
    margin: 0 auto;
    padding: 0 auto;
    /*border:solid 1px red;*/
    clear: both;
    position: relative;
}

.article-content{
    width: 800px;
    margin: 0 auto;
    padding: 0 auto;
    text-align: center;
    line-height: 30px;
}

.article-content h1,h2,h3,h4,h5,h6{
    text-align: left;
}

.article-content img {
    max-width: 700px;
    max-height: 700px;
    margin: 0 auto;
    padding: 0 auto;
    text-align: center;
}