<style type="text/css">
  #dialog_format {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    z-index: 20000;
  }

  #dialog_format .dialog_box {
    position: relative;
    background: rgba(255, 255, 255);
    top: 35%;
    width: 40%;
    min-width: 20em;
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    height:auto;
    align-items: center;
  }

  #dialog_format .dialog_line {
    margin-top: .5em;
    margi