.none{
  display: none;
}

.block-center{
  display: block;
  margin: auto;
  margin-top: 15vh;
}

.margin-top-page{
  margin-top: 40px;
}

.barcode{
  margin-top: 8vh;
  background-color: #fff;
  padding: 20px;
}

.close-window{
  font-size: 25px;
  position: fixed;
  right: 5px;
  top: 5px;
  color: #dc0000ee;
}

.loading{
  background-color: #ffffffa3;
  width: 100%;
  height: 100vh;
  position: fixed;
  top: 0;
}

.loading img{
  display: block;
  margin: auto;
  margin-top: 34vh;
}

.saving{
  background-color: #ffffffa3;
  width: 100%;
  height: 100vh;
  position: fixed;
  top: 0;
}

.saving img{
  display: block;
  margin: auto;
  margin-top: 34vh;
}

#sidebar{
  overflow-y: scroll;
}

.fff{
  background-color: #fff;
}