我需要這個
放置在距離頁面底部 20px 處，但每次我嘗試給它絕對定位時，它都會跳到 div 之外的一半或者變得更長。
它使用 display:flex 和 justify-content:center 居中。完全相同的問題發生在 socila 圖示上，它需要位于桌面的頂部和移動設備的底部，但如果我給它們一個絕對位置，那么它們就不再居中。
這是整個頁面，供您查看我需要什么，非常感謝您抽出寶貴時間：
<!DOCTYPE html>
<html>
<head>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg OMhuP IlRH9sENBO0LRn5q 8nbTov4 1p" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.6.0.slim.min.js" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"></script>
<script src="https://kit.fontawesome.com/234b945d49.js" crossorigin="anonymous"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
font-family: "Lato", sans-serif;
transition: 0.3s;
}
#main-menu-container{
right:0;
}
.sidenav {
padding:0;
height: 100%;
margin:0;
width: 0px;
position: fixed;
z-index: 1;
top: 0px;
right: 0;
background: radial-gradient(#3d77a7, #264c6d);
overflow-x: hidden;
transition: 0.5s ease-in-out;
text-align: center;
}
.sidenav ul{
list-style: none;
padding: 150px 0 0 0;
text-align:center;
display: inline-block;
}
.sidenav ul a {
padding: 8px 8px 8px 8px;
text-decoration: none;
font-size: 25px;
text-transform: uppercase;
color:white;
font-weight:bold;
display: block;
transition: 0.3s;
}
.sidenav ul a:hover {
color: #ffdc00;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 20px;
font-size: 36px;
margin-left: 50px;
color:#ffdc00;
}
#main {
transition: margin-right .5s;
padding: 16px;
}
/* @media screen and (max-height: 450px) {
.sidenav {padding-top: 15px;}
.sidenav a {font-size: 18px;}
} */
#nav-icon3 {
width: 40px;
height: 30px;
position: fixed;
top:20px;
right:20px;
margin: 0;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
-webkit-transition: .5s ease-in-out;
-moz-transition: .5s ease-in-out;
-o-transition: .5s ease-in-out;
transition: .5s ease-in-out;
cursor: pointer;
}
#nav-icon3 span{
display: block;
position: absolute;
height: 5px;
width: 100%;
background: #ffdc00;
border-radius: 1px;
opacity: 1;
left: 0;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
-webkit-transition: .4s ease-in-out;
-moz-transition: .4s ease-in-out;
-o-transition: .4s ease-in-out;
transition: .4s ease-in-out;
}
/* Icon 3 */
#nav-icon3 span:nth-child(1) {
top: 0px;
}
#nav-icon3 span:nth-child(2),#nav-icon3 span:nth-child(3) {
top: 12px;
}
#nav-icon3 span:nth-child(4) {
top: 24px;
}
#nav-icon3.open span:nth-child(1) {
top: 18px;
width: 0%;
left: 50%;
}
#nav-icon3.open span:nth-child(2) {
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
}
#nav-icon3.open span:nth-child(3) {
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
}
#nav-icon3.open span:nth-child(4) {
top: 18px;
width: 0%;
left: 50%;
}
.social-icons {
display: flex;
justify-content: center;
position:absolute;
top: 20px;
}
.social-icons i{
color:#ffdc00;
padding:5px;
transition: 0.3s;
}
.social-icons i:hover{
color: white;
}
.menu-separator {
/* position:relative;
bottom:50px; */
border: none;
border-radius: 2px;
height: 7px !important;
opacity: 100%;
color: #ffdc00; /* old IE */
background: #ffdc00; /* Modern Browsers */
width: 80%;
margin: 20px auto 20px auto;
}
.menu-additional-links{
display: flex;
justify-content: center;
width: 80%;
margin: auto;
}
.menu-additional-links a{
text-decoration: none;
padding: 20px 15px 20px 15px;
color: white;
}
.menu-additional-links a:hover{
color: #ffdc00;
}
/*MOBILE BREAKPOINTS*/
@media only screen and (max-width: 768px) {
}
</style>
</head>
<body>
<div id="main-menu-container">
<div id="mySidenav" class="sidenav" role="navigation">
<div id="nav-icon3">
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<ul>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Clients</a></li>
<li><a href="#">Contact</a></li>
</ul>
<div class="social-icons">
<a href="#"><i class="fab fa-facebook-square fa-2xl"></i></a>
<a href="#"><i class="fab fa-instagram-square fa-2xl"></i></a>
<a href="#"><i class="fab fa-linkedin fa-2xl"></i></a>
</div>
<hr class="menu-separator">
<div class="menu-additional-links">
<a href="#">Datenschutzerkl?rung</a>
<a href="#">Impressum</a>
</div>
</div>
</div>
<div id="main">
<h2>Sidenav Push Example</h2>
<p>Click on the element below to open the side navigation menu, and push this content to the right.</p>
<span class="breakpoint"></span>
</div>
<script>
//check screen width via javascript, and pass a diffrent width to the nav menu
const mediaQuery = window.matchMedia('(min-width: 768px)')
let menuWidth = "";
if (mediaQuery.matches){menuWidth = "500px";} else {menuWidth = "100vw";}
function handleScreenChange(e){
if (mediaQuery.matches){
menuWidth = "500px";
} else {
menuWidth = "100vw";
}
}
mediaQuery.addListener(handleScreenChange);
//set the width and play the animation on hamburger click
$("#nav-icon3").click(function() {
if (document.getElementById('nav-icon3').classList.contains("open")){
document.getElementById("mySidenav").style.width = "0";
document.body.style.backgroundColor = "rgba(0,0,0,0)";
}
else{
document.getElementById("mySidenav").style.width = menuWidth;
document.body.style.backgroundColor = "rgba(0,0,0,0.5)";
}
document.getElementById('nav-icon3').classList.toggle("open");
});
</script>
</body>
</html> uj5u.com熱心網友回復：
您可以嘗試使用這種樣式來 hr
position: absolute;
bottom: 20px;
margin-left: 10%;
你有 80% 的寬度，所以 10% 的左邊使 hr 居中
轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/454011.html
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