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這是我的主要代碼：爲什麼這些div樣式會破壞我的網站佈局？
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
/*SLIDESHOW*/
body {
background-color: #150a35;
}
* {box-sizing:border-box}
body {font-family: Verdana,sans-serif;}
.mySlides {display:none}
/* Slideshow container */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* The dots/bullets/indicators */
.dot {
height: 13px;
width: 13px;
margin: 0 2px;
background-color: #bbb;
border-radius: 100%;
display: inline-block;
transition: background-color 0.6s ease;
}
.active {
background-color: #717171;
}
/* Fading animation */
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
animation-name: fade;
animation-duration: 1.5s;
}
@-webkit-keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
@keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
/* On smaller screens, decrease text size */
@media only screen and (max-width: 300px) {
.text {font-size: 11px}
}
/* SLIDESHOW */
/* Navigation list */
body {margin: 0;}
ul.topnav {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #7c4dff;
}
ul.topnav li {float: left;}
ul.topnav li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
ul.topnav li a:hover:not(.active) {background-color: #111;}
ul.topnav li a.active {background-color: #4CAF50;}
ul.topnav li.right {float: right;}
@media screen and (max-width: 600px){
ul.topnav li.right,
ul.topnav li {float: none;}
}
</style>
</head>
<body>
<ul class="topnav">
<li><a class="active" href="#hyperkeys">Hyper-Keys</a></li>
<li><a href="#home">Home</a></li>
<li><a href="#games">Games</a></li>
<li class="right"><a href="#tos">Terms of Service</a></li>
<li class="right"><a href="#contact">Contact</a></li>
<li class="right"><a href="#contact">FAQ</a></li>
</ul>
<br>
<br>
<div class="slideshow-container">
<div class="mySlides fade">
<img src="1.png" style="width:100%">
</div>
<div class="mySlides fade">
<img src="2.png" style="width:100%">
</div>
<div class="mySlides fade">
<img src="3.png" style="width:100%">
</div>
</div>
<br>
<div style="text-align:center">
<span class="dot"></span>
<span class="dot"></span>
<span class="dot"></span>
</div>
<script>
var slideIndex = 0;
showSlides();
function showSlides() {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
slideIndex++;
if (slideIndex> slides.length) {slideIndex = 1}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
slides[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " active";
setTimeout(showSlides, 2000); // Change image every 2 seconds
}
</script>
<br>
</body>
</html>這是什麼樣子：
但當我添加此到<head>：
div {
padding: 15px 30px;
background: #7c4dff;
width: 430px;
border-radius: 8px;
}
出現這種情況的網站：
所有的東西正好在同一時間，你可以什麼都不懂。我究竟做錯了什麼？
這似乎太簡單了，但..不要將該代碼添加到頭部？ – Toby
將div移動到樣式表的頂部。留下其餘的代碼。這意味着div {}將首先被應用，然後其餘的選擇器將根據您的調整改變它。如果將div {}放在樣式的末尾，則任何選定的div都將被div {}覆蓋。 – iSR5