#about { width: 1200px; margin: 0 auto; }
#about .article-item-desc .img-wrap img:last-child, #about .article-item-desc .img-wrap img:nth-child(4) {
 width: 100%;
}
img { max-width: 100%; }
 @media screen and (max-width: 1400px) {
}
 @media screen and (max-width: 1200px) {
 #about {
 width: 100%;
 padding: 0 15px;
}
 #about .article-item.us-desc {
 width: 100%;
}
 #about .article-item.us-desc .us-img {
 position: static;
 right: 0px;
 bottom: 0px;
}
}
 @media screen and (max-width: 996px) {
 body {
 padding: 52px 0 0 0;
}
 #about .article-item-title {
 font-size: 18px;
 margin-bottom: 10px;
 margin-top: 25px;
}
 p {
 margin: 0 0 3px 0;
}
}