How to center align which serves as menu?

I tried to wrap it in div, I tried bunch of different code, but I cannot make it. I will appreciate any help.

I don't know where am I making mistake.

.menu2 {
  list-style: none;
  justify-content: center;
  align-items: center;
}
.menu2 li {
  float: left;
  width: 80px;
  padding: 1px;
}
.menu2 > li a {
  display: block;
  font-size: 0.8em;
  padding: 3px;
  text-decoration: none;
  text-align: center;
  color: #333333;
  border: 1px solid #d6d6d6;
  transition: all ease .5s;
}
.menu2:hover > li a {
  opacity: .5;
  transition: all ease .5s;
}
.menu2 > li:hover a {
  opacity: 1;
  color: #D2383C;
  border-color: #D2383C;
}

<ul class="menu2">
<li><a href="">2014</a></li>
<li><a href="">2013</a></li>
<li><a href="">2012</a></li>
</ul>

via Chebli Mohamed