#list li.pg-1 .art-content {
    max-width: 55%;
}
#list li.pg-2 .art-content {
    max-width: 65%;
    margin: 30% auto 0 auto;
}
#list li .art-content .samepgh_ {
    margin-bottom:  0;
}

#list li.pg-3 .art-content {
    margin: 64% auto 0 auto;
}