/*菜单栏开始*/
#nav{ margin:0 15px; margin-top:5px; display:flex; flex-flow:wrap; }	
#nav a:nth-child(2n+1){ margin-right:7px;}
#nav a:nth-child(2n){ margin-left:7px;}
#nav a{ display:inline-block; flex:none; width:calc(100%/2 - 7px); justify-content:space-between; margin-top:15px; text-align:center; font-size:16px; line-height:35px; color:#181817; background-color:#eeeff2; border-radius:4px;}
#nav .a_on{ color:#fff; background-color:#ed434c;}
.tit b{ font-size:20px;color:#1a1a1a;}
.tit p{ font-size:16px; text-align:left; color:#333; line-height:200%;}


/*内容样式*/
h1{ margin:0 15px; text-align:center; height:60px; font-size:22px; line-height:60px; color:#1a1a1a; }
#zaiyao { margin:0 15px; font-size: 14px; padding:8px 0; line-height:160%; color: #aaa; border-top: 1px dashed #e8e8e8; border-bottom: 1px dashed #e8e8e8; }


/*产品*/
#nr{ margin:0 15px; margin-bottom:20px; display:flex; flex-flow:wrap;}
#nr a:nth-child(2n+1){ margin-right:7px;}
#nr a:nth-child(2n){ margin-left:7px;}
#nr a{ display:inline-block; width:calc(100%/2 - 7px); flex:none; justify-content:space-between; margin-top:20px;}
#nr a img{ width:100%; border-radius:8px;}
#nr a h4{ margin-top:5px; font-size:15px; font-weight:normal; color:#222; height:45px; line-height:22px;}