*{
  margin: 0;
  padding: 0;
}

body {
  background-color: #599de4;
}

a {
  text-decoration: none;
}

img {
  width: 100%;
  height: auto;
}

#app {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  background-color: #fff;
}

.app_nav {
  position: fixed;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 500px;
  height: 0.5rem;
  background-color: #fff;
  border-bottom: 1px solid #F2F2F2;
  box-sizing: border-box;
  z-index: 99;
}
.app_nav_title {
  font-weight: 800;
  font-size: 0.2rem;
  color: #000000;
  text-align: center;
  line-height: 0.5rem;
}
.app_nav_left {
  position: absolute;
  left: 0.15rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.29rem;
  height: 0.29rem;
  background: url(../image/left.png) no-repeat;
  background-size: 100% auto;
  cursor: pointer;
}
.app_nav_right {
  position: absolute;
  right: 0.15rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.29rem;
  height: 0.29rem;
  background: url(../image/fx.png) no-repeat;
  background-size: 100% auto;
  cursor: pointer;
}

/* tip提醒开始 */
.tip_popup_body {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10%;
  font-size: 0.18rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 0.1rem;
  padding: 0.14rem;
  min-width: 2.9rem;
  box-sizing: border-box;
  animation-name: fade;
  animation-duration: 0.3s;
  transition: all .3s;
  z-index: 9999999;
}

.tip_popup_body .tip_text {
  text-align: center;
}

@keyframes fade {
  from {
    opacity: 0;
    bottom: 0%;
  }

  to {
    opacity: 1;
    bottom: 10%;
  }
}

/* tip提醒结束 */