#list li.pg-1 .art-content {
    margin: 17% auto 0 auto;
}

#list li.pg-2 .art-content {
    margin: 17% auto 0 auto;
}


#list li.pg-3 .art-content {
    margin: 60% auto 0 auto;
}

#list li:nth-child(3) .art-content .part {width: 41.8%;}