以前是文字,我改成图片后,出现logo(图片)与导航栏重合到一起!如果是文字状态的话正常!请问大神这是怎么一回事?代码如下:<!DOCTYPE html><html><head><!-- title and meta --><meta charset="utf-8" /><meta name="viewport" content="width=device-width,initial-scale=1.0" /><meta name="description" content="" /><title>根据滚动自动调整导航栏大小 - 站长素材</title> <!-- css --><link rel="stylesheet" href="css/style.css" /> <!-- js --><script src="js/classie.js"></script><script> function init() { window.addEventListener('scroll', function(e){ var distanceY = window.pageYOffset || document.documentElement.scrollTop, shrinkOn = 300, header = document.querySelector("header"); if (distanceY > shrinkOn) { classie.add(header,"smaller"); } else { if (classie.has(header,"smaller")) { classie.remove(header,"smaller"); } } }); } window.onload = init();</script></head><body><div id="wrapper"><header> <div class="container clearfix"> <h1 id="logo"><img src="img/logo.png" width="227" height="77" alt=""/></h1> <nav> <a href="">首页</a> <a href="">博林工作室</a> <a href="">Dolor</a> </nav> </div></header><!-- /header --><div id="main"> <div id="content"> <section> <div> <h1>新闻资讯</h1> <p>天寒地</p> <p>男人下班后出去鬼混</p> </div> </section> <section> <div> <h1>物业电梯</h1> <p>天寒地冻</p> <p>男人</p> </div> </section> <section> <div> <h1>电梯的故事</h1> <p>天寒地冻,</p> <p>男人下班后出</p> </div> </section> <section> <div> <h1>好久不见</h1> <p>天寒地冻</p> <p>男人下班</p> </div> </section> <section> <div> <h1>你在干什么?</h1> <p>天寒地冻</p> <p>男人下班后出去鬼混</p> </div> </section> </div></div><!-- #main --><footer></footer><!-- /footer --></div><!-- /#wrapper --></body></html>CSS代码如下html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td {
background: transparent;
border: 0;
margin: 0;
padding: 0;
vertical-align: baseline; }
body {
line-height: 1; }
h1, h2, h3, h4, h5, h6 {
clear: both;
font-weight: normal; }
ol, ul {
list-style: none; }
blockquote {
quotes: none; }
blockquote:before, blockquote:after {
content: '';
content: none; }
del {
text-decoration: line-through; }
/* tables still need 'cellspacing="0"' in the markup */
table {
border-collapse: collapse;
border-spacing: 0; }
a img {
border: none; }
/* =Scss Variables
-------------------------------------------------------------- */
/* =Global
-------------------------------------------------------------- */
*,
*:before,
*:after {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box; }
body {
background-color: #3cb5f9;
color: #505050;
font-family: "Ubuntu", sans-serif;
font-weight: 300;
font-size: 16px;
line-height: 1.8; }
/* Headings */
h1, h2, h3, h4, h5, h6 {
line-height: 1;
font-weight: 300; }
a {
text-decoration: none;
color: #3cb5f9; }
a:hover {
color: #0793e2; }
/* =Template
-------------------------------------------------------------- */
#wrapper {
width: 100%;
margin: 0 auto; }
#main {
background-color: #fff;
padding-top: 150px; }
.container {
width: 100%;
margin: 0 auto;
padding: 0 30px; }
section {
padding: 60px 0; }
section h1 {
font-weight: 700;
margin-bottom: 10px; }
section p {
margin-bottom: 30px; }
section p:last-child {
margin-bottom: 0; }
section.color {
background-color: #3cb5f9;
color: white; }
/* =Info Bar
-------------------------------------------------------------- */
#info-bar {
background-color: #3cb5f9; }
#info-bar a {
color: white;
font-size: 14px;
text-transform: uppercase;
display: inline-block;
margin: 0;
padding: 10px; }
#info-bar a:hover {
background-color: #0793e2; }
#info-bar span.all-tutorials,
#info-bar span.back-to-tutorial {
display: block;
width: 50%; }
#info-bar span.all-tutorials {
float: left;
text-align: left; }
#info-bar span.back-to-tutorial {
float: right;
text-align: right; }
/* =Header
-------------------------------------------------------------- */
header {
width: 100%;
height: 150px;
overflow: hidden;
position: fixed;
top: 0;
left: 0;
z-index: 999;
background-color: #0683c9;
-webkit-transition: height 0.3s;
-moz-transition: height 0.3s;
-ms-transition: height 0.3s;
-o-transition: height 0.3s;
transition: height 0.3s; }
header h1#logo {
display: inline-block;
height: 150px;
width: 300px;
line-height: 100px;
float: left;
-webkit-transition: all 0.3s;
-moz-transition: all 0.3s;
-ms-transition: all 0.3s;
-o-transition: all 0.3s;
transition: all 0.3s; }
header nav {
display: inline-block;
float: right; }
header nav a {
line-height: 150px;
margin-left: 20px;
color: #9fdbfc;
font-weight: 700;
font-size: 18px;
-webkit-transition: all 0.3s;
-moz-transition: all 0.3s;
-ms-transition: all 0.3s;
-o-transition: all 0.3s;
transition: all 0.3s; }
header nav a:hover {
color: white; }
header.smaller {
height: 75px; }
header.smaller h1#logo {
width: 150px;
height: 75px;
line-height: 75px;
font-size: 30px; }
header.smaller nav a {
line-height: 75px; }
/* =Footer
-------------------------------------------------------------- */
/* =Extras
-------------------------------------------------------------- */
.clearfix:after {
visibility: hidden;
display: block;
content: "";
clear: both;
height: 0; }
/* =Media Queries
-------------------------------------------------------------- */
@media all and (max-width: 660px) {
/* =Header
-------------------------------------------------------------- */
header h1#logo {
display: block;
float: none;
margin: 0 auto;
height: 100px;
line-height: 100px;
text-align: center; }
header nav {
display: block;
float: none;
height: 50px;
text-align: center;
margin: 0 auto; }
header nav a {
line-height: 50px;
margin: 0 10px; }
header.smaller {
height: 75px; }
header.smaller h1#logo {
height: 40px;
line-height: 40px;
font-size: 30px; }
header.smaller nav {
height: 35px; }
header.smaller nav a {
line-height: 35px; } }
@media all and (max-width: 600px) {
.container {
width: 100%; }
#info-bar a {
display: block; }
#info-bar span.all-tutorials,
#info-bar span.back-to-tutorial {
width: 100%; }
#info-bar span.all-tutorials,
#info-bar span.back-to-tutorial {
float: none;
text-align: center; }
#info-bar span.all-tutorials {
border-bottom: solid 1px #0793e2; } }
JS代码如下
( function( window ) {
'use strict';
// class helper functions from bonzo https://github.com/ded/bonzo
function classReg( className ) {
return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
}
// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;
if ( 'classList' in document.documentElement ) {
hasClass = function( elem, c ) {
return elem.classList.contains( c );
};
addClass = function( elem, c ) {
elem.classList.add( c );
};
removeClass = function( elem, c ) {
elem.classList.remove( c );
};
}
else {
hasClass = function( elem, c ) {
return classReg( c ).test( elem.className );
};
addClass = function( elem, c ) {
if ( !hasClass( elem, c ) ) {
elem.className = elem.className + ' ' + c;
}
};
removeClass = function( elem, c ) {
elem.className = elem.className.replace( classReg( c ), ' ' );
};
}
function toggleClass( elem, c ) {
var fn = hasClass( elem, c ) ? removeClass : addClass;
fn( elem, c );
}
var classie = {
// full names
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass
};
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( classie );
} else {
// browser global
window.classie = classie;
}
})( window );
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