.art_wapper {
    max-width: 800px;
    margin: 130px auto 40px;
    padding: 0 20px;
}

.art_title {
    font-size: 1.7em;
}

.art_sub_title {
    font-size: 1.3em;
    margin-bottom: 10px;
}

.art_img_wrap {
    text-align: center;
}
.art_img {
    width: 70%;
    min-width: 230px;
    margin: 30px;
}

hr {
    margin: 14px 6px;
}

h1 {
    padding: 12px 0;
}

h2 {
    padding: 12px 0;
}

a {
    color: #2354db;
}