固定CSS导航栏

时间:2013-11-05 23:43:56

标签: html css navbar

我最近解决了一个问题,这个问题一直困扰着我的CSS导航栏。现在我有将其固定到顶部的问题,以便在滚动页面时向下滚动。我知道我需要添加的是Position:fixed;但我不知道在哪里添加它。

我最近的尝试导致文本被修复,但Navbar的背景却没有。非常感谢任何帮助。

我的CSS

#cssmenu ul {
  margin: 0;
  padding: 0;


}
#cssmenu li {
  margin: 0;
  padding: 0;
}
#cssmenu a {
  margin: 0;
  padding: 0;
}
#cssmenu > ul {
  display:table;
  margin:0 auto;
}
#cssmenu ul {
  list-style: none;
}
#cssmenu a {
  text-decoration: none;
}
#cssmenu {
  height: 70px;
  background-color: #232323;
  box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.4);
  width: auto;
  text-align: center;



}
#cssmenu > ul > li {
  float: left;
  margin-left: 15px;
  position: relative;
}
#cssmenu > ul > li > a {
  color: #a0a0a0;
  font-family: Verdana, 'Lucida Grande';
  font-size: 15px;
  line-height: 70px;
  padding: 15px 20px;
  -webkit-transition: color .15s;
  -moz-transition: color .15s;
  -o-transition: color .15s;
  transition: color .15s;
}
#cssmenu > ul > li > a:hover {
  color: #ffffff;
}
#cssmenu > ul > li > ul {
  opacity: 0;
  visibility: hidden;
  padding: 16px 0 20px 0;
  background-color: #fafafa;
  text-align: left;
  position: absolute;
  top: 55px;
  left: 50%;
  margin-left: -90px;
  width: 180px;
  -webkit-transition: all .3s .1s;
  -moz-transition: all .3s .1s;
  -o-transition: all .3s .1s;
  transition: all .3s .1s;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
  -moz-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
}
#cssmenu > ul > li:hover > ul {
  opacity: 1;
  top: 65px;
  visibility: visible;
}
#cssmenu > ul > li > ul:before {
  content: '';
  display: block;
  border-color: transparent transparent #fafafa transparent;
  border-style: solid;
  border-width: 10px;
  position: absolute;
  top: -20px;
  left: 50%;
  margin-left: -10px;
}
#cssmenu > ul ul > li {
  position: relative;
}
#cssmenu ul ul a {
  color: #323232;
  font-family: Verdana, 'Lucida Grande';
  font-size: 13px;
  background-color: #fafafa;
  padding: 5px 8px 7px 16px;
  display: block;
  -webkit-transition: background-color 0.1s;
  -moz-transition: background-color 0.1s;
  -o-transition: background-color 0.1s;
  transition: background-color 0.1s;
}
#cssmenu ul ul a:hover {
  background-color: #f0f0f0;
}
#cssmenu ul ul ul {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: -16px;
  left: 206px;
  padding: 16px 0 20px 0;
  background-color: #fafafa;
  text-align: left;
  width: 180px;
  -webkit-transition: all .3s;
  -moz-transition: all .3s;
  -o-transition: all .3s;
  transition: all .3s;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
  -moz-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.4);
}
#cssmenu ul ul > li:hover > ul {
  opacity: 1;
  left: 190px;
  visibility: visible;
}
#cssmenu ul ul a:hover {
  background-color: #cc2c24;
  color: #f0f0f0;
}

2 个答案:

答案 0 :(得分:6)

您应该从css文件中将其添加到所有导航项的整个容器中,我猜这是带有DOM的{​​{1}}元素。此外,您还需要添加id="cssmenu"以确保它保持在0位置。

修改

的CSS:

top: 0px;

HTML:

#my-nav-bar {
    position: fixed;
    top: 0px;
}

现在<body> <div id="my-nav-bar"> <!-- nav bar content --> </div> <!-- page content --> </body> div将固定在窗口顶部。

请参阅此JSFiddle Example我刚刚制作

答案 1 :(得分:0)

我认为你#cssmenu是你的主要导航容器,可能试试

    #cssmenu {
      position: absolute;   
   }