我试图让我的按钮用关键帧淡入，但它不工作，我知道我做错了什么。我最终得到了动画文本的工作，但这是给我一个头痛的问题，我不能找到任何地方的信息，已帮助我... 我是网络开发的新手，所以不要对我或我的代码（可能是丑陋的和无组织的）太苛刻了lol。我正在努力学习尽可能多的东西，所以如果你能解释为什么它不工作，为什么别的东西可能？谢谢大家<3
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="style.css">
<link href="https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap" rel="stylesheet">
<title>Welcome! | Video Editing by Scottis</title>
</head>
<body>
<!-- Header -->
<div class="container">
<span class="text1">Video Editing by Scottis</span>
</div>
<!-- Buttons -->
<style>
.btn {
background-color: white;
color: rgb(133, 4, 255);
text-align: center;
font-size: 15px;
font-weight: bold;
margin-right: -250px;
margin-top: 600px;
margin-left: 515px;
padding: 30px;
}
</style>
</head>
<body>
<button class="btn">Portfolio</button>
<button class = "btn">Pricing</button>
<button class="btn">Contact</button>
</body>
</html>
我的CSS。
* {
box-sizing: border-box;
padding: 0;
margin: 0;
font-family: sans-serif;
}
body {
margin: 0;
font-family: 'Roboto', sans-serif;
}
body {
background-image: url("./assets/background.png");
background-color: #cccccc;
background-repeat: no-repeat;
}
/* Create three equal columns that floats next to each other */
.col-md-3 {
float: left;
width: 15%;
padding: 15px;
padding: 10px;
margin: auto;
display: block;
}
/* Clear floats after the columns */
.row:after {
content: "";
display: table;
clear: both;
}
/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media screen and (max-width:768px) {
.col-md-3 {
width: 100% auto;
}
}
.col-md-12 {
text-align: center;
}
.card-title {
text-align: center;
}
.container{
text-align: center;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100%;
}
.container span{
color: white;
text-transform: uppercase;
display: block;
}
.text1{
color: white;
font-size: 60px;
font-weight: 700;
letter-spacing: 8px;
margin-bottom: 20px;
position: relative;
animation: text 3s 1;
}
@keyframes text {
0%{
margin-bottom: -20%;
}
30%{
letter-spacing: 25px;
margin-bottom: -40px;
}
85%{
letter-spacing: 15px;
margin-bottom: -40px;
}
}
}
@keyframes button {
0%{
opacity: 0%;
}
0%{
opacity: 0%;
}
25%{
opacity: 25%;
}
50%{
opacity: 50%;
}
75%{
opacity: 75%;
}
100%{
opacity: 100%;
}
}
首先，你的代码有一些问题。你重复的head和body标签不符合正确的有效html顺序。仔细看看下面MDN的页面和资源。https:/developer.mozilla.orgen-USdocsWebHTMLElement。
至于你的关键帧问题，在你的css中定义你想用序列控制的类，然后用一个独特的调用名添加动画，我用的是 fadeIn. 下面我添加了Mozilla, webkit, opera和ms @keyframe动画的不透明度。我正在定义动画来启动定时器（3秒）。@keyframe 0% { opacity: 0; } ，然后结束于 100% { opacity: 1; }. 我为不同的浏览器添加多个套件。
.btn {
animation: fadeIn ease 3s;
-webkit-animation: fadeIn ease 3s;
-moz-animation: fadeIn ease 3s;
-o-animation: fadeIn ease 3s;
-ms-animation: fadeIn ease 3s;
}
@keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-moz-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-webkit-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-o-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
* {
box-sizing: border-box;
padding: 0;
margin: 0;
font-family: sans-serif;
}
body {
margin: 0;
font-family: 'Roboto', sans-serif;
}
body {
background-image: url("./assets/background.png");
background-color: #cccccc;
background-repeat: no-repeat;
}
/* Start class for buttons animation fadeIn ease */
.btn {
animation: fadeIn ease 3s;
-webkit-animation: fadeIn ease 3s;
-moz-animation: fadeIn ease 3s;
-o-animation: fadeIn ease 3s;
-ms-animation: fadeIn ease 3s;
}
@keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-moz-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-webkit-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-o-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-ms-keyframes fadeIn {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
/* End of animation keyframes */
/* Create three equal columns that floats next to each other */
.col-md-3 {
float: left;
width: 15%;
padding: 15px;
padding: 10px;
margin: auto;
display: block;
}
/* Clear floats after the columns */
.row:after {
content: "";
display: table;
clear: both;
}
/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media screen and (max-width:768px) {
.col-md-3 {
width: 100% auto;
}
}
.col-md-12 {
text-align: center;
}
.card-title {
text-align: center;
}
.container {
text-align: center;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100%;
}
.container span {
color: white;
text-transform: uppercase;
display: block;
}
.text1 {
color: white;
font-size: 60px;
font-weight: 700;
letter-spacing: 8px;
margin-bottom: 20px;
position: relative;
animation: text 3s 1;
}
@keyframes text {
0% {
margin-bottom: -20%;
}
30% {
letter-spacing: 25px;
margin-bottom: -40px;
}
85% {
letter-spacing: 15px;
margin-bottom: -40px;
}
}
}<div class="container">
<span class="text1">Video Editing by Scottis</span>
</div>
<button class="btn">Portfolio</button>
<button class="btn">Pricing</button>
<button class="btn">Contact</button>