*{margin:0;padding:0}
ul,li{list-style: none;}
a {text-decoration: none;color: #0e0e0e;}
body {box-sizing: border-box;font-family: PingFang; }
img{width: 100%}
/*  -- flex弹性布局 -- */
.flex-row{display:flex;flex-direction:row; justify-content: space-between;}
.flex-col{display:flex;flex-direction:column}
.flex-wrap{flex-wrap:wrap}
.justify-start{justify-content:flex-start}
.justify-end{justify-content:flex-end}
.justify-center{justify-content:center}
.justify-between{justify-content:space-between}
.justify-around{justify-content:space-around}
.align-start{align-items:flex-start}
.align-end{align-items:flex-end}
.align-center{align-items:center}
.align-baseline{align-items:baseline}
.align-stretch{align-items:stretch}
.self-start{align-self:flex-start}
.self-end{align-self:flex-end}
.self-center{align-self:center}
.self-baseline{align-self:baseline}
.self-stretch{align-self:stretch}
.flex-1{flex: 1}

/* 字体大小 */
.f-18{font-size:18px}
.f-20{font-size:20px}
.f-22{font-size:22px}
.f-24{font-size:24px}
.f-26{font-size:26px}
.f-28{font-size:28px}
.f-29{font-size:29px}
.f-30{font-size:30px}
.f-32{font-size:32px}
.f-34{font-size:34px}
.f-36{font-size:36px}
.f-40{font-size:40px}
.f-42{font-size:42px}
.f-45{font-size:45px}
.f-50{font-size:50px}
.f-54{font-size:54px}
.f-55{font-size:55px}
.f-60{font-size:60px}
.f-70{font-size:70px}
.f-90{font-size:90px}

/*  -- 内外边距 -- */
.margin-0{margin:0}
.margin-xs{margin:10px}
.margin-sm{margin:20px}
.margin{margin:30px}
.margin-lg{margin:40px}
.margin-xl{margin:50px}
.margin-xxl{margin:60px}
.margin-top-xs{margin-top:10px}
.margin-top-sm{margin-top:20px}
.margin-top{margin-top:30px}
.margin-top-lg{margin-top:40px}
.margin-top-xl{margin-top:50px}
.margin-top-xxl{margin-top:60px}
.margin-right-xs{margin-right:10px}
.margin-right-sm{margin-right:20px}
.margin-right{margin-right:30px}
.margin-right-lg{margin-right:40px}
.margin-right-xl{margin-right:50px}
.margin-right-xxl{margin-right:60px}
.margin-bottom-xs{margin-bottom:10px}
.margin-bottom-sm{margin-bottom:20px}
.margin-bottom{margin-bottom:30px}
.margin-bottom-lg{margin-bottom:40px}
.margin-bottom-xl{margin-bottom:50px}
.margin-bottom-xxl{margin-bottom:60px}
.margin-left-xs{margin-left:10px}
.margin-left-sm{margin-left:20px}
.margin-left{margin-left:30px}
.margin-left-lg{margin-left:40px}
.margin-left-xl{margin-left:50px}
.margin-left-xxl{margin-left:60px}
.margin-lr-xs{margin-right:10px;margin-left:10px}
.margin-lr-sm{margin-right:20px;margin-left:20px}
.margin-lr{margin-right:30px;margin-left:30px}
.margin-lr-lg{margin-right:40px;margin-left:40px}
.margin-lr-xl{margin-right:50px;margin-right:50px;margin-left:50px;margin-left:50px}
.margin-tb-xs{margin-top:10px;margin-bottom:10px}
.margin-tb-sm{margin-top:20px;margin-bottom:20px}
.margin-tb{margin-top:30px;margin-bottom:30px}
.margin-tb-lg{margin-top:40px;margin-bottom:40px}
.margin-tb-xl{margin-top:50px;margin-bottom:50px}
.margin-tb-xxl{margin-top:60px;margin-bottom:60px}

/*颜色*/
.c-3e7{color:#3E7EF1}
.c-66{color: #666666}
.c-99{color: #999999}