*{margin: 0; padding: 0;}
.centent{max-width: 800px; margin: 0 auto; font-size: 16px; font-family: '微软雅黑'; color: #44444;}
.centent a{text-decoration: none; color: #444444;}
.centent li{list-style: none;}
.centent img{max-width: 100%; display: block; margin:15px auto;}
.centent p{margin-top: 10px; line-height: 32px; text-indent: 2em;}
.centent strong{color: #0070C0; display: block; font-size: 16px; margin-top: 15px; text-indent: 2em;}
.pa{padding: 10px; margin: 0 5%; background-color: #529bcf; color: #ffffff;}
.pb{padding: 10px; margin: 0 5%; background-color: #ffffff; border:1px solid #529bcf; color: #529bcf;}