.mSiteTittle h3{
  font-size: 1.2rem;
  text-align: center;
  margin-block-start: 10px;
  margin-block-end: 18px;
  margin-inline-start: 0;
  margin-inline-end: 0;
  font-weight: 500;
}
.mSiteTittle {
  width: 100%;
  margin: 0 auto 0 auto;
  text-align: center;
  font-size: 1.6rem;
  position: relative;
}
.tittleBg {
  position: absolute;
  width: 4rem;
  height: 0.5rem;
  background-color: #fc2221;
  left: 50%;
  bottom: -0.2rem;
  margin-left: -2rem;
  opacity: 0.6;
}
.u-flex {
  display: flex;
  flex-direction: row;
  align-items: center;
}
/* 换行 */
.u-flex-wrap {
  flex-wrap: wrap;
}

/* 不换行 */
.u-flex-nowrap {
  flex-wrap: nowrap;
}
/* 垂直居中 */
.u-col-center {
  align-items: center;
}

/* 顶部对齐 */
.u-col-top {
  align-items: flex-start;
}

/* 底部对齐 */
.u-col-bottom {
  align-items: flex-end;
}

/* 左边对齐 */
.u-row-left {
  justify-content: flex-start;
}

/* 水平居中 */
.u-row-center {
  justify-content: center;
}

/* 右边对齐 */
.u-row-right {
  justify-content: flex-end;
}

/* 水平两端对齐，项目之间的间隔都相等 */
.u-row-between {
  justify-content: space-between;
}

/* 水平每个项目两侧的间隔相等，所以项目之间的间隔比项目与父元素两边的间隔大一倍 */
.u-row-around {
  justify-content: space-around;
}

.flex-column-center{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.flex-column-left{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.flex-column-right{
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
}

.u-flex-1 {
  flex: 1;
}

.u-flex-2 {
  flex: 2;
}

.u-flex-3 {
  flex: 3;
}

.u-main-color{
  color: #303133 !important;
}

.u-tips-color{
  color: #909399;
}

.u-type-error{
  color: #fa3534;
}