css布局实现多种下拉菜单导航显示效果代码-html代码-BFW代码库

代码语言：html

代码描述：css布局实现多种下拉菜单导航显示效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
<style>
    /* ==========================================================================
   NMC Bootstrap

   This LESS file imports all other LESS files. You should compile
   and minify this file before site launch.
   ========================================================================== */
/* Import NMC bootstrap */
/**
 * html5doctor.com Reset Stylesheet
 * v1.6.1
 * Last Updated: 2010-09-17
 * Author: Richard Clark - http://richclarkdesign.com
 * Twitter: @rich_clark
 */
html,
body,
div,
span,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
abbr,
address,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
samp,
small,
strong,
sub,
sup,
var,
b,
i,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
}
body {
  line-height: 1;
}
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  display: block;
}
nav ul {
  list-style: none;
}
blockquote,
q {
  quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
  content: '';
  content: none;
}

a {
  margin: 0;
  padding: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
}
/* change colours to suit your needs */
ins {
  background-color: #ff9;
  color: #000;
  text-decoration: none;
}
/* change colours to suit your needs */
mark {
  background-color: #ff9;
  color: #000;
  font-style: italic;
  font-weight: bold;
}
del {
  text-decoration: line-through;
}
abbr[title],
dfn[title] {
  border-bottom: 1px dotted;
  cursor: help;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
/* change border colour to suit your needs */
hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #cccccc;
  margin: 1em 0;
  padding: 0;
}
input,
select {
  vertical-align: middle;
}
/*---------------------------------------------------
    LESS Prefixer
  ---------------------------------------------------
    
    All of the CSS3 fun, none of the prefixes!

    As a rule, you can use the CSS properties you
    would expect just by adding a '.':

    box-shadow => .box-shadow(@args)

    Also, when shorthand is available, arguments are
    not parameterized. Learn CSS, not LESS Prefixer.

    -------------------------------------------------
    TABLE OF CONTENTS
    (*) denotes a syntax-sugar helper
    -------------------------------------------------

        .animation(@args)
            .animation-delay(@delay)
            .animation-direction(@direction)
            .animation-duration(@duration)
            .animation-iteration-count(@count)
            .animation-name(@name)
            .animation-play-state(@state)
            .animation-timing-function(@function)
        .background-size(@args)
        .border-radius(@args)
        .box-shadow(@args)
            .inner-shadow(@args) *
        .box-sizing(@args)
            .border-box() *
            .content-box() *
        .columns(@args)
            .column-count(@count)
            .column-gap(@gap)
            .column-rule(@args)
            .column-width(@width)
        .gradient(@default,@start,@stop) *
            .linear-gradient-top(@default,@color1,@stop1,@color2,@stop2,[@color3,@stop3,@color4,@stop4])*
            .linear-gradient-left(@default,@color1,@stop1,@color2,@stop2,[@color3,@stop3,@color4,@stop4])*
        .opacity(@factor)
        .transform(@args)
            .rotate(@deg)
            .scale(@factor)
            .translate(@x,@y)
            .translate3d(@x,@y,@z)
            .translateHardware(@x,@y) *
        .text-shadow(@args)
        .transition(@args)
            .transition-delay(@delay)
            .transition-duration(@duration)
            .transition-property(@property)
            .transition-timing-function(@function)



    Credit to LESS Elements for the motivation and
    to CSS3Please.com for implementation.

    Copyright (c) 2012 Joel Sutherland
    MIT Licensed:
    https://www.opensource.org/licenses/mit-license.php

-----------------------------------------------------*/
/* Animation */
/* Background Size */
/* Border Radius */
/* Box Shadows */
/* Box Sizing */
/* Columns */
/* Gradients */
/* Opacity */
/* Text Shadow */
/* Transforms */
/* Transitions */
/**
 * New Media Campaigns Idioms
 *
 * These are common patterns we use in all of our
 * projects. They are consolidated here to keep code DRY.
 *
 * Listing
 *    * .noText,.textReplace
 *    * .noList
 *    * .noForm
 *    * .fixedWidth(@width)
 *    * .columnWidth(@width)
 *    * .columnLeft(@width)
 *    * .columnRight(@width)
 *    * .fullSize
 *    * .absoluteDefault
 *    * .absoluteFullSize
 *    * .clearFix
 */
/*  Hides text when using image replacement */
.noText,
.textReplace {
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
}
/*  Removes bullets, margin, and padding from list */
.noList {
  list-style: none;
  margin: 0;
  padding: 0;
}
/*  Removes webkit styling from form element */
.noForm {
  border: none;
  margin: 0;
  padding: 0;
  -webkit-appearance: none;
}
/*  Center a fixed width container */
/*  Adds left or right columns (e.g. content and sidebar) */
/*  Set width and height of element to that of its parent */
.fullSize {
  height: 100%;
  width: 100%;
}
/*  Position element absolutely to 0,0 */
.absoluteDefault {
  position: absolute;
  left: 0;
  top: 0;
}
/*  Position element absolutely and set its width and height to that of its parent (useful for slideshows) */
.absoluteFullSize {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
}
/*  The micro clearfix http://nicolasgallagher.com/micro-clearfix-hack/ */
.clearFix {
  *zoom: 1;
}
.clearFix:before,
.clearFix:after {
  content: "";
  display: table;
}
.clearFix:after {
  clear: both;
}
/**
 * Spacing
 *
 * This LESS file defines margins and paddings for block-level
 * elements. Helper classes are included for use elsewhere
 * in site styles.
 */
/* Settings */
/**
 * Spacing
 * p, m, lh = padding, margin, line-height
 * a, t, r, b, l, h, v = all, top, right, bottom, left, horizontal, vertical
 * n, h, s, d = none(0px), half(@baseline / 2), single(@baseline), double(@baseline * 2), none(0px)
 * i = ! important
 */
.ptn {
  padding-top: 0px;
}
.ptni {
  padding-top: 0px !important;
}
.pbn {
  padding-bottom: 0px;
}
.pbni {
  padding-bottom: 0px !important;
}
.pln {
  padding-left: 0px;
}
.plni {
  padding-left: 0px !important;
}
.prn {
  padding-right: 0px;
}
.prni {
  padding-right: 0px !important;
}
.pvn {
  padding-top: 0px;
  padding-.........完整代码请登录后点击上方下载按钮下载查看