.range_slider{
  width: 100%;
}
.range_slider_row{
  text-align:center;
  padding-top: 5px;
  padding-bottom: 5px;
}

.graduation_mark{
  border: 1px solid black;
  width: 0px;
  margin: auto;
  height: 20px;
  display: inline-block;
}
.graduations{
  text-align: center;
  width: 100%;
}