@keyframes show {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes hide {
  0% {
    opacity: 1;
  }


  100% {
    opacity: 0;
  }
}

.toast_box {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  overflow: hidden;
  display: none;
}

.toast_box p {
  position: absolute;
  bottom: 50%;
  left: 50%;
  z-index: 10;
  transform: translate(-50%, -50%);

  box-sizing: border-box;
  padding: 10px 20px;
  width: 350px;
  /* 提示框的背景色 */
  background: #707070;
  color: #fff;
  font-size: 16px;
  text-align: center;
  border-radius: 6px;
  opacity: 0.8;
}