我做了这个"快速入门"按钮我想把它放在标题"；所有的记忆在一部电影中"；。我试着把它对齐，但不起作用。
* {
margin: 0;
padding: 0;
}
body{
height: 100vh;
width: 50vh;
background-image: linear-gradient(rgba(0, 0, 0, 0.75), rgba(58, 58, 58, 0.75)), url(4kcamera.jpg);
background-size: cover;
background-position: center;
}
nav{
width: 100%;
height: 80px;
position: fixed;
}
.logo{
float: left;
padding: 0 30px;
margin-left: 55px;
margin-right: 30px;
width: 50px;
margin-top: 20px;
}
ul li{
list-style: none;
display: inline-block;
line-height: 90px;
padding: 0 31px;
}
ul{
margin-left: 840px;
}
ul li a{
text-decoration: none;
font-size: 20px;
font-family: 'Roboto Condensed', sans-serif;
color: rgb(250, 250, 250);
}
ul li a:hover {
color: rgb(102, 151, 241);
transition-duration: 0.5s;
}
#text{
transform: uppercase;
color: white;
font-family: 'Poppins', sans-serif;
text-align: center;
margin: 0;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
font-size: 60px;
}
#button1{
background-color: rgb(30, 109, 255);
border: none;
border-radius: 15px 50px;
color: white;
padding: 35px;
margin: 22px;
text-align: center;
font-size: 13px;
font-family: 'Poppins', Helvetica;
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PRODUX NA</title>
<link rel="stylesheet" type="text/css" href="style.css">
<link rel = "stylesheet" type = "text/css" href = "reset.css"/>
<link href="https://fonts.googleapis.com/css2?family=Roboto+Condensed:wght@300&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Quicksand:wght@600&family=Roboto+Condensed:wght@300&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@1,300&display=swap" rel="stylesheet">
</head>
<body>
<nav>
<a href="index.html">
<img class="logo" src="1 NA.png" width="50" height="50">
</a>
<ul>
<li>
<a href="index.html">Home</a>
</li>
<li>
<a href="about.html">About Me</a>
</li>
<li>
<a href="contacts.html">Contacts</a>
</li>
<li>
<a href="portfolio.html">Portfolio</a>
</li>
</ul>
</nav>
<div id="text">
</div>
<script type = "text/javascript">
var i = 0,text;
text = "All your favorite memories in one film."
function typing(){
if(i < text.length){
document.getElementById("text").innerHTML += text.charAt(i);
i++
setTimeout(typing, 50);
}
}
typing();
</script>
<div class="container">
<button id="button1">Get Started</button>
</div>
</body>
</html>该按钮位于javascript函数下方。id是"；按钮1"；并且容器的id只是"0"；容器"；。正如您在CSS文件中看到的，我使用了text-align命令。
此外，我还尝试将内容居中对齐，并将所有项目对齐到标题下方的中心(使用Javascript函数(。我们将不胜感激。
我正在尽我所能在不重组html的情况下保持对您项目的更改。根据您的使用方式，有更好的方法来构建html。
我做的第一件事是为要嵌套在其中的文本和按钮创建一个容器。然后，我在另一个容器中移动了文本div和带有按钮的容器div。然后，我将您的许多绝对定位从#text样式移到了#textAndButtonContainer。然后，我使用display: flex来允许flexbox造型/居中，因为我发现这是居中的最简单方法。
希望这能有所帮助！
* {
margin: 0;
padding: 0;
}
body {
height: 100vh;
width: 50vh;
background-image: linear-gradient(rgba(0, 0, 0, 0.75), rgba(58, 58, 58, 0.75)), url(4kcamera.jpg);
background-size: cover;
background-position: center;
}
nav {
width: 100%;
height: 80px;
position: fixed;
}
.logo{
float: left;
padding: 0 30px;
margin-left: 55px;
margin-right: 30px;
width: 50px;
margin-top: 20px;
}
ul li{
list-style: none;
display: inline-block;
line-height: 90px;
padding: 0 31px;
}
ul{
margin-left: 840px;
}
ul li a{
text-decoration: none;
font-size: 20px;
font-family: 'Roboto Condensed', sans-serif;
color: rgb(250, 250, 250);
}
ul li a:hover {
color: rgb(102, 151, 241);
transition-duration: 0.5s;
}
#text{
transform: uppercase;
color: white;
font-family: 'Poppins', sans-serif;
text-align: center;
margin: 0;
font-size: 60px;
}
#textAndButtonContainer {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
display: flex;
flex-direction: column;
justify-content: center;
border: 1px solid red;
}
.container {
display: flex;
justify-content: center;
}
#button1{
background-color: rgb(30, 109, 255);
border: none;
border-radius: 15px 50px;
color: white;
padding: 35px;
margin: 22px;
text-align: center;
font-size: 13px;
font-family: 'Poppins', Helvetica;
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PRODUX NA</title>
<link rel="stylesheet" type="text/css" href="style.css">
<link rel = "stylesheet" type = "text/css" href = "reset.css"/>
<link href="https://fonts.googleapis.com/css2?family=Roboto+Condensed:wght@300&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Quicksand:wght@600&family=Roboto+Condensed:wght@300&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@1,300&display=swap" rel="stylesheet">
</head>
<body>
<nav>
<a href="index.html">
<img class="logo" src="1 NA.png" width="50" height="50">
</a>
<ul>
<li>
<a href="index.html">Home</a>
</li>
<li>
<a href="about.html">About Me</a>
</li>
<li>
<a href="contacts.html">Contacts</a>
</li>
<li>
<a href="portfolio.html">Portfolio</a>
</li>
</ul>
</nav>
<div id="textAndButtonContainer">
<div id="text">
</div>
<div class="container">
<button id="button1">Get Started</button>
</div>
</div>
<script type = "text/javascript">
var i = 0,text;
text = "All your favorite memories in one film."
function typing(){
if(i < text.length){
document.getElementById("text").innerHTML += text.charAt(i);
i++
setTimeout(typing, 50);
}
}
typing();
</script>
</body>
</html>主要问题是位置为absolute的文本。要将按钮放置在文本下方，容纳按钮的容器也必须放置在absolute位置。这反过来也会对齐按钮。
将此添加到样式中：
.container {
position: absolute;
bottom: -25px;/*give enough space to the text above*/
left: 50%;/*to horizontally center it*/
transform: translateX(-50%);/*to horizontally center it*/
}
这会将按钮定位在文本的底部。
尝试将按钮的父div更改为text-center类，并在CSS中添加.text-center。
所以你会有HTML:
<div class="text-center">
<button id="button1">Get Started</button>
</div>
对于您的CSS：
.text-center {
text-align: center;
}