* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Microsoft YaHei', serif, 'Times New Roman', Georgia, Times, Cambria;
}
.container {
  width: 1200px;
  margin: auto;
}
.tl {
  margin-top: 20px;
}
.tl-0 {
  font-size: 40px;
}
.tl-1 {
  font-size: 36px;
}
.tl-2 {
  font-size: 32px;
}
.tl-3 {
  font-size: 28px;
}
.tl-4 {
  font-size: 24px;
}
.tl-5 {
  font-size: 20px;
}
.tl-6 {
  font-size: 18px;
}
.tl-7 {
  font-size: 16px;
}
.tl-8 {
  font-size: 14px;
}
.tl-9 {
  font-size: 12px;
}
.tl-10 {
  font-size: 10px;
}
.tl-center {
  text-align: center;
}
.c-white {
  color: #fff;
}
.c-default {
  color: #333;
}
.c-main {
  color: #286FE9;
}
.c-warn {
  color: #fdd319;
}
.c-success {
  color: #5fd11d;
}
.c-error {
  color: #f14f39;
}
.c-tip {
  color: #d6d6d6;
}
.b {
  font-weight: bold;
}
.flex-list {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  list-style: none;
  padding: 0;
}
.flex-list .item {
  padding: 1rem;
}
.flex-2 > .item {
  width: calc(50% - 1.5rem * 0.5);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-2 > .item:nth-child(2n+2) {
  margin-right: 0;
}
.flex-3 > .item {
  width: calc(33.33333333% - 1.5rem * 0.66666667);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-3 > .item:nth-child(3n+3) {
  margin-right: 0;
}
.flex-4 > .item {
  width: calc(25% - 1.5rem * 0.75);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-4 > .item:nth-child(4n+4) {
  margin-right: 0;
}
.flex-5 > .item {
  width: calc(20% - 1.5rem * 0.8);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-5 > .item:nth-child(5n+5) {
  margin-right: 0;
}
.flex-6 > .item {
  width: calc(16.66666667% - 1.5rem * 0.83333333);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-6 > .item:nth-child(6n+6) {
  margin-right: 0;
}
.flex-7 > .item {
  width: calc(14.28571429% - 1.5rem * 0.85714286);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-7 > .item:nth-child(7n+7) {
  margin-right: 0;
}
.flex-8 > .item {
  width: calc(12.5% - 1.5rem * 0.875);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-8 > .item:nth-child(8n+8) {
  margin-right: 0;
}
.flex-9 > .item {
  width: calc(11.11111111% - 1.5rem * 0.88888889);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-9 > .item:nth-child(9n+9) {
  margin-right: 0;
}
.flex-10 > .item {
  width: calc(10% - 1.5rem * 0.9);
  margin: 1.5rem 1.5rem 0 0;
}
.flex-10 > .item:nth-child(10n+10) {
  margin-right: 0;
}
.flex {
  display: flex;
  align-items: center;
}
.flex.center {
  justify-content: center;
}
.flex.left {
  justify-content: left;
}
.flex.right {
  justify-content: right;
}
.flex.between {
  justify-content: space-between;
}
.flex.vertical {
  flex-direction: column;
}
.flex.offsetLeft {
  align-items: flex-start;
}
.flex.offsetRight {
  align-items: flex-end;
}