.container {
  width: 16rem;
  max-width: 750px;
  margin: 0 auto;
  overflow: hidden;
}
.clearfix:before {
  display: table;
  content: " ";
}
.clearfix:after {
  clear: both;
  display: table;
  content: " ";
}
.pull-left {
  float: left;
}
.pull-right {
  float: right;
}


.auto{
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%,-50%);
  -ms-transform: translate(-50%,-50%);
  transform: translate(-50%,-50%);
}

.left-right {
  position: absolute;
  left: 50%;
  transform: translate3d(-50%, 0, 0);
}
.top-bottom {
  position: absolute;
  top: 50%;
  margin-top: -50%;
}
.mint-indicator {
  -webkit-transition: opacity .2s linear;
  transition: opacity .2s linear;
}
.mint-indicator-wrapper {
  top: 50%;
  left: 50%;
  position: fixed;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  box-sizing: border-box;
  text-align: center;
  z-index: 99999999;
}
.mint-indicator-spin {
  display: inline-block;
  text-align: center;
}
.mint-spinner-snake {
  -webkit-animation: mint-spinner-rotate 0.8s infinite linear;
  animation: mint-spinner-rotate 0.8s infinite linear;
  border: 4px solid transparent;
  border-radius: 50%;
}
.mint-indicator-text {
  display: block;
  color: #fff;
  text-align: center;
  margin-top: 10px;
  font-size: 16px;
}
.mint-indicator-mask {
  top: 0;
  left: 0;
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0;
  background: transparent;
  z-index: 88888888;
}
@keyframes mint-spinner-rotate {
  0% {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(1turn);
    transform: rotate(1turn);
  }
}
.lrtb {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate3d(-50%, -50%, 0);
}
.base-flex {
  display: block;
  display: flex;
  display: -webkit-flex;
  justify-content: flex-start;
}
.center-flex {
  display: block;
  display: flex;
  display: -webkit-flex;
  justify-content: center;
}
.right-flex {
  display: block;
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
}
.space-between-flex {
  display: block;
  display: flex;
  display: -webkit-flex;
  justify-content: space-between;
}