大家好，我有一个z-index为-1且位于我的统计信息部分的分层页脚。这是显示公司统计信息的部分。我的z-index为1，滚动时页脚仍在其上方？我已经阅读了CSS技巧上的z-index，但无法弄清楚。任何帮助将非常感激。在此先感谢：）
body, html {
margin: 0;
padding: 0;
}
.inner-wrap {
position: relative;
z-index: 1;
}
/*---HEADER---*/
header {
background-image: url(img/wall2.jpeg);
height: 100vh;
background-attachment: fixed;
}
nav {
background-color: white;
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
position: fixed;
top: 0;
left: 0;
z-index: 2;
box-shadow: 0px 0px 100px grey;
}
.logo, ul {
flex-basis: 30%;
list-style-type: none;
}
ul {
margin-right: 30px;
margin-top: 25px;
}
li {
display: inline-block;
font-size: 1.55rem;
margin-right: 20px;
font-family: 'Rajdhani';
color: rgba(102,102,102,0.75);
}
li:hover {
cursor: pointer;
color: #1a1a1a;
transition: all 0.7s ease;
}
.after:after {
position: relative;
left: 12px;
top: 2px;
display: inline-block;
content: "";
width: 1px;
height: 20px;
background-color: rgba(102,102,102,0.25);
}
.logo {
color: red;
font-size: 3.7rem;
margin: 10px;
opacity: 1;
margin-left: 30px;
}
.phrase {
text-align: center;
position: relative;
top: 300px;
}
.phrase p {
color: white;
font-size: 3.5rem;
font-family: 'Arvo';
margin-bottom: 30px;
}
.phrase a {
background-color: red;
border-radius: 25px;
color: white;
font-family: 'Bitter';
font-size: 1.8rem;
padding-left: 15px;
padding-right: 15px;
padding-bottom: 10px;
padding-top: 10px;
}
.phrase a:hover {
background-color: #cc2900;
transition: all 0.2s ease;
cursor: pointer;
}
.phrase .fas {
display: block;
color: white;
font-size: 3.5rem;
margin-top: 15px;
}
/*---ABOUT---*/
.stats {
width: 100%;
display: flex;
box-shadow: 0px 0px 150px grey;
position: relative;
z-index: 1;
}
.stats div {
display: inline-block;
flex-basis: 35%;
text-align: center;
padding-bottom: 30px;
}
.stats p {
font-size: 2rem;
color: rgba(102,102,102, 1);
font-family: 'Rajdhani';
margin-bottom: 0;
margin-top: 10px;
}
.stats div:before {
display: inline-block;
content: '';
width: 2px;
height: 35px;
background-color: rgba(102,102,102, 0.60);
}
.about .wrapper {
width: 100%;
background-image: url('img/concrete.jpg');
background-position: center;
background-attachment: fixed;
background-size: cover;
}
.about h1 {
position: relative;
top: 40px;
color: white;
font-family: 'Rajdhani';
font-size: 4rem;
text-align: center;
margin-top: 0;
word-spacing: 7px;
text-shadow: 0px 0px 100px grey;
}
.underline {
width: 100px;
height: 2.5px;
background-color: red;
margin-right: auto;
margin-left: auto;
margin-top: -15px;
border-radius: 4px;
}
.about p {
color: white;
font-size: 1.8rem;
font-family: 'Arvo';
margin-bottom: 0;
padding-bottom: 60px;
text-align: center;
margin-top: 40px;
padding-left: 50px;
padding-right: 50px;
}
/*---FOOTER---*/
.footer-window {
width: 100%;
height: 500px;
background-color: transparent;
}
.footer {
z-index: -1;
}
.footer .wrapper {
width: 100%;
background-color: red;
height: 500px;
position: fixed;
bottom: 0;
left: 0;
z-index: -1;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Kane Concrete And Construction LLC</title>
<link rel="stylesheet" href="style.css">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css" integrity="sha384-UHRtZLI+pbxtHCWp1t77Bi1L4ZtiqrqD80Kn4Z8NTSRyMA2Fd33n5dQ8lWUE00s/" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Arvo|Bitter|Lato|Montserrat|Noto+Sans|Open+Sans|Poppins|Roboto|Sarabun|Ubuntu" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Raleway" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Abel|Asap|Krub|Oxygen|Rajdhani|Staatliches|Varela+Round" rel="stylesheet">
</head>
<body>
<div class="inner-wrap">
<header>
<nav>
<div class="logo">
<i class="fab fa-accusoft"></i>
</div>
<div class="nav">
<ul>
<li class="after">Home</li>
<li class="after">About</li>
<li class="after">Services</li>
<li class="after">Job Openings</li>
<li class="after">Gallery</li>
<li>Contact</li>
</ul>
</div>
</nav>
<div class="phrase">
<p>It all starts at the foundation.</p>
<a>Get a Quote</a>
<i class="fas fa-angle-down"></i>
</div>
</header>
<section class="stats">
<div id="start-year">
<p>Established</p><br>
<p style="color: red; font-size: 2.3rem; font-family: 'Roboto'; font-weight: bold;">2015</p>
</div>
<div id="projects">
<p>Projects</p><br>
<p style="color: red; font-size: 2.3rem; font-family: 'Roboto'; font-weight: bold;">200+</p>
</div>
<div id="claims">
<p>Insurance claims</p><br>
<p style="color: red; font-size: 2.3rem; font-family: 'Roboto'; font-weight: bold;">87%</p>
</div>
</section>
<section class="about">
<div class="wrapper">
<h1>About Us</h1>
<div class="underline"></div>
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</div>
</section>
</div>
<section class="footer-window"></section>
<section class="footer">
<div class="wrapper">
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</div>
</section>
</body>
</html>
答案 0 :(得分：0)
如果我正确理解了您的问题，则需要：
.footer.wrapper {
some code
}
.footer和.wrapper之间有多余的空格。如果我是对的，则空格表示同时定位这两个元素，无空格表示其子级。
我希望是那样。