css消息數量，圓圈數字，購物車數量。

 

html: 

<a href="index.html" class="nav">未讀留言<div class="nav-counter nav-counter-blue">4</div></a>

css: 

.nav{
    width:100px;
    display:block;
    position:relative;
}
.nav-counter {
  position: absolute;
  top: 2px;
  right: -8px;
  min-width: 8px;
  height: 20px;
  line-height: 20px;
  margin-top: -11px;
  padding: 0 6px;
  font-weight: normal;
  color: white;
  text-align: center;
  text-shadow: 0 1px rgba(0, 0, 0, 0.2);
  background: #e23442;
  border: 1px solid #911f28;
  border-radius: 11px;
  background-image: -webkit-linear-gradient(top, #e8616c, #dd202f);
  background-image: -moz-linear-gradient(top, #e8616c, #dd202f);
  background-image: -o-linear-gradient(top, #e8616c, #dd202f);
  background-image: linear-gradient(to bottom, #e8616c, #dd202f);
  -webkit-box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(0, 0, 0, 0.12);
  box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(0, 0, 0, 0.12);
}
.nav-counter-blue {
  background: #e8616c;
  border: 1px solid #dd202f;
  background-image: -webkit-linear-gradient(top, #e8616c, #dd202f);
  background-image: -moz-linear-gradient(top, #e8616c, #dd202f);
  background-image: -o-linear-gradient(top, #e8616c, #dd202f);
  background-image: linear-gradient(to bottom, #e8616c, #dd202f);
}