nav input{
    width: 230px;
    margin-left: 20px;
    border: 1px solid #aaa;
}

.show_con h2{
    font-size: 24px;
    text-align: center;
}
.show_con > section{
    color: #666;
    font-size: 14px;
    border-bottom: 1px solid #ccc;
    margin: 15px 0;
    line-height: 30px;
}
.show_con > section time{
    margin-right: 15px;
}
.show_con > div{
    text-align: center;
}
.show_con > div img{
    width: 700px;
}
.show_con > p{
    text-indent: 2em;
    line-height: 30px;
    margin: 15px 0;
}

.show_con > .con3_list{
    border-top: 1px solid #ccc;
}