.backno{
display: flex;
  margin-bottom: 0.5em;
  border-bottom: dotted 1px #aaa;
  padding-bottom: 0.5em;
flex-wrap: wrap;

}

.backno li{
padding: 0 1em;
  border-left: dotted 1px #aaa;

}

.backnen{
font-size: 1.3em;
  line-height: 1.7em;
}

.current{
background: #eee;
  color: #111;
}

.current a{
  color: #111;
}