html - 如何让我的菜单在所有显示器上居中

Question

http://jsfiddle.net/aw4zgwso/

这是目前正在发生的事情，我似乎无法将导航菜单居中，除非我将 width:40% 添加到 .menu 但那不是效果不佳，并且会在较小分辨率的显示器上将文本打倒

.nav { 
  width:100%; 
  height:40px; 
  display:block; 
  background-color:#313131;
}

.nav_inner {
  height:100%; 
  margin:0 auto; 
  position:relative;
}


.nav_menu {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 40px;
  line-height: 15px;

}

.nav_menu li {
  float: left;
}

.nav_menu li a {
  display: block;
  color:#ffffff;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.nav_menu a:hover {
  background-color: red;
  color:white;
}

.clearfix:after {
  display:block;
  clear:both;
}

/*----- Menu Outline -----*/
.menu-wrap {
  width:100%;
  background:#3e3436;
}

.menu {
  margin:0px auto;
}

.menu li {
  margin:0px;
  list-style:none;
}

.menu a {
  color:#ffffff;
  text-decoration:none;
}

.menu li:hover > a, .menu .current-item > a {
  text-decoration:none;
  color:#ffffff;
}

.menu .arrow {
  font-size:12px;
  line-height:0%;
  color:#00AAFF;	
  padding-left: 5px;
}

/*----- Top Level -----*/
.menu > ul > li {
  float:left;
  display:inline-block;
  position:relative;
  font-size:16px;
  color: #ffffff;
}

.menu > ul > li > a {
  padding:9px 40px;
  display:inline-block;
}

.menu > ul > li:hover > a, .menu > ul > .current-item > a {
  background:#191919;
}

/*----- Bottom Level -----*/
.menu li:hover .sub-menu {
  z-index:1;
  opacity:1;
}

.sub-menu {
  width:160%;
  padding:5px 0px;
  position:absolute;
  top:95%;
  left:0px;
  z-index:-1;
  opacity:0;
  transition:opacity linear 0.15s;
  background:#313131;
}

.sub-menu li {
  display:block;
  font-size:16px;
}

.sub-menu li a {
  padding:10px 30px;
  display:block;
}

.sub-menu li a:hover, .sub-menu .current-item a {
  background:#191919;
}

<div class="nav">
    <div class="nav_inner">
        <nav class="hide-mobile menu">
            <ul class="clearfix">
                <li><a href="index.html">Home</a></li>
                <li><a href="#" style="cursor: default;">About us<span class="arrow">&#9660;</span></a>
                    <ul class="sub-menu">
                        <li><a href="our-values.html">Our Values</a></li>
                        <li><a href="technology-partners.html">Technology Partners</a></li>
                    </ul>
                </li>
                <li><a href="#" style="cursor: default;">IT Solutions<span class="arrow">&#9660;</span></a>
                    <ul class="sub-menu">
                        <li><a href="audio-visual.html">Audio Visual</a></li>
                        <li><a href="backup-replication-business-continuity.html">Backup, Replication and 
						<li><a href="visitor-and-entry-management.html">Visitor &amp; Entry Management</a></li>
                    </ul>
                </li>
                <li><a href="contact-us.html">Contact Us</a></li>
            </ul>
        </nav>
    </div>
</div>

Answer 1

您可以简单地使用 text-align:center 并像这样制作 li inline-block :

.menu>ul {
  text-align: center;
  margin: 0;
  padding: 0;
}

.menu>ul>li {
  display: inline-block;
  position: relative;
  font-size: 16px;
  color: #ffffff;
}

这里是完整的代码

.nav {
  width: 100%;
  height: 40px;
  display: block;
  background-color: #313131;
}

.nav_inner {
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.nav_menu {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 40px;
  line-height: 15px;
}

.nav_menu li {
  float: left;
}

.nav_menu li a {
  display: block;
  color: #ffffff;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.nav_menu a:hover {
  background-color: red;
  color: white;
}

.clearfix:after {
  display: block;
  clear: both;
}


/*----- Menu Outline -----*/

.menu-wrap {
  width: 100%;
  background: #3e3436;
}

.menu {
  margin: 0px auto;
}

.menu li {
  margin: 0px;
  list-style: none;
}

.menu a {
  color: #ffffff;
  text-decoration: none;
}

.menu li:hover>a,
.menu .current-item>a {
  text-decoration: none;
  color: #ffffff;
}

.menu .arrow {
  font-size: 12px;
  line-height: 0%;
  color: #00AAFF;
  padding-left: 5px;
}


/*----- Top Level -----*/

.menu>ul {
  text-align: center;
  margin: 0;
  padding: 0;
}

.menu>ul>li {
  display: inline-block;
  position: relative;
  font-size: 16px;
  color: #ffffff;
}

.menu>ul>li>a {
  padding: 9px 40px;
  display: inline-block;
}

.menu>ul>li:hover>a,
.menu>ul>.current-item>a {
  background: #191919;
}


/*----- Bottom Level -----*/

.menu li:hover .sub-menu {
  z-index: 1;
  opacity: 1;
}

.sub-menu {
  width: 160%;
  padding: 5px 0px;
  position: absolute;
  top: 95%;
  left: 0px;
  z-index: -1;
  opacity: 0;
  transition: opacity linear 0.15s;
  background: #313131;
}

.sub-menu li {
  display: block;
  font-size: 16px;
}

.sub-menu li a {
  padding: 10px 30px;
  display: block;
}

.sub-menu li a:hover,
.sub-menu .current-item a {
  background: #191919;
}

<div class="nav">
  <div class="nav_inner">

    <nav class="hide-mobile menu">
      <ul class="clearfix">

        <li><a href="index.html">Home</a></li>

        <li><a href="#" style="cursor: default;">About us<span class="arrow">&#9660;</span></a>

          <ul class="sub-menu">
            <li><a href="our-values.html">Our Values</a></li>
            <li><a href="technology-partners.html">Technology Partners</a></li>
          </ul>

        </li>

        <li><a href="#" style="cursor: default;">IT Solutions<span class="arrow">&#9660;</span></a>

          <ul class="sub-menu">
            <li><a href="audio-visual.html">Audio Visual</a></li>
            <li><a href="backup-replication-business-continuity.html">Backup, Replication and 
							<li><a href="visitor-and-entry-management.html">Visitor &amp; Entry Management</a></li>
          </ul>

        </li>



        <li><a href="contact-us.html">Contact Us</a></li>

      </ul>
    </nav>

  </div>
</div>