.artPostBox{
    margin: 50px auto 0;
    width: 1200px;
}
.postItem{
    margin-bottom: 20px;
}
.postItem-left{
    width: 250px;
    text-align: right;
    line-height: 30px;
    font-size: 18px;
    color: #333;
}
.postItem-right{
    width:930px;
}
.post-tb{
    width: 80%;
    height:30px;
    border: 1px solid #333;
    border-radius: 5px;
    text-indent: 1em;
}
.post-body{
    width: 80%;
    height: 500px;
}