.flex {
  display: flex;
}

.x-center {
  justify-content: center;
}

.x-left {
  justify-content: flex-start;
}

.x-right {
  justify-content: flex-end;
}

.x-space-around {
  justify-content: space-around;
}

.x-space-between {
  justify-content: space-between;
}

.bg-cover {
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}
.bg-cover.animation {
  transition: 0.3s;
}
.bg-cover.animation:hover {
  transform: scale(1.1);
}

.pt-xs {
  padding-top: 10px;
}

.pt-sm {
  padding-top: 30px;
}

.pt-md {
  padding-top: 50px;
}

.pt-lg {
  padding-top: 70px;
}

.pb-xs {
  padding-bottom: 10px;
}

.pb-sm {
  padding-bottom: 30px;
}

.pb-md {
  padding-bottom: 50px;
}

.pb-lg {
  padding-bottom: 70px;
}

.omit {
  overflow: hidden;
  text-overflow:ellipsis;
  white-space: nowrap;
}

.omit2 {
}

/* 手机样式 */
@media screen and (max-width: 900px) {
  .pt-xs {
    padding-top: 5px;
  }

  .pt-sm {
    padding-top: 15px;
  }

  .pt-md {
    padding-top: 25px;
  }

  .pt-lg {
    padding-top: 35px;
  }

  .pb-xs {
    padding-bottom: 5px;
  }

  .pb-sm {
    padding-bottom: 15px;
  }

  .pb-md {
    padding-bottom: 25px;
  }

  .pb-lg {
    padding-bottom: 35px;
  }
}