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我试图学习响应CSS，但有一些基本的css设计有困难。我已经创建了一个固定的导航栏，您可以在下面的代码中看到。但是我面临的问题是，我无法正确地将内容与它对齐。内容被导航栏重叠。你能建议一个合适的CSS修复，而不是一个解决方法，如添加固定高度的空白div？下面是代码：CSS - 将内容对齐固定Navbar
*{
box-sizing: border-box;
}
body{
margin:0px;
padding: 0px;
background-color: darkgrey;
}
.title-bar{
position:fixed;
margin-top:0px;
z-index: 100;
opacity: 1;
background-color:white;
width: 100%;
height: 100px;
border-bottom: solid 4px dodgerblue;
}
.page-container{
padding: 0px;
}
.menu-options{
list-style-type:none;
}
.menu-options li{
display: inline;
padding: 10px;
}
.menu-options li:hover{
background-color: deepskyblue;
}
.menu-options li a{
color: black;
text-decoration:none;
}
.clear20{
height: 40px;
clear: both;
}
.clear10{
height: 20px;
clear: both;
}
.display-bar-1{
background-color: deepskyblue;
height: 200px;
padding:40px;
position: relative;
}
html {
font-family: "Lucida Sans", sans-serif;
}
.caps {
text-transform: uppercase;
}
.register_button{
text-align:center;
padding-top:20px;
padding-bottom:10px;
width: 200px;
height: 70px;
border: solid 3px white;
font-style:bold;
font-size:14pt;
}
.register_button:hover{
background-color:navajowhite;
color: white;
cursor:pointer;
border-color: black;
}<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<link href="responsive.css" rel="stylesheet">
</head>
<body>
<div class="page-container">
<div class="title-bar">
<table width="100%">
<tr>
<td><h1> Multirater Surveys </h1></td>
<td>
<ul class="menu-options">
<li> <a href="#"> Home </a></li>
<li> <a href="#"> How It Works </a></li>
<li> <a href="#"> Features </a></li>
<li> <a href="#"> Surveys </a></li>
<li> <a href="#"> Plans and Pricings </a></li>
<li> <a href="#"> Webinars </a></li>
<li> <a href="#"> Blog </a></li>
</ul>
</td>
</tr>
</table>
</div>
<div class="display-bar-1">
<div class="row">
<div class="" style="width:60%;float:left;font-style:bold;font-size:22pt;color:white;padding:10px;">
World Class Service <br>
More Than 100 Clients
</div>
<div class="" style="padding:15px;float:left;width:40%;">
<div class="register_button" id="register"> <a style="text-decoration:none;color:black;" href="#"> Register Now </a> </div>
</div>
</div>
</div>
<div class="display-bar-2">
<div>
<h1> Some random block of texts </h1>
<p> Hello world how are you ? what is going on? </p>
</div>
</div>
<div class="display-bar-1">
<div class="row">
<div class="" style="width:60%;float:left;font-style:bold;font-size:22pt;color:white;padding:10px;">
World Class Service <br>
More Than 100 Clients
</div>
<div class="" style="padding:15px;float:left;width:40%;">
<div class="register_button" id="register"> <a style="text-decoration:none;color:black;" href="#"> Register Now </a> </div>
</div>
</div>
</div>
<div class="display-bar-2">
<div>
<h1> Some random block of texts </h1>
<p> Hello world how are you ? what is going on? </p>
</div>
</div>
<div class="display-bar-1">
<div class="row">
<div class="" style="width:60%;float:left;font-style:bold;font-size:22pt;color:white;padding:10px;">
World Class Service <br>
More Than 100 Clients
</div>
<div class="" style="padding:15px;float:left;width:40%;">
<div class="register_button" id="register"> <a style="text-decoration:none;color:black;" href="#"> Register Now </a> </div>
</div>
</div>
</div>
<div class="display-bar-2">
<div>
<h1> Some random block of texts </h1>
<p> Hello world how are you ? what is going on? </p>
</div>
</div>
<div class="display-bar-2">
<div>
<h1> Some random block of texts </h1>
<p> Hello world how are you ? what is going on? </p>
</div>
</div>
</div>
<input type="text" class="caps"/>
<script>
window.onload = function(){
document.getElementById("register").onclick = function(){
window.location = "https://www.google.com";
}
}
</script>
</body>
</html>
`responsive.html`