<style> * { margin: 0; padding: 0;} .myscroll { width: 300px; height: 260px; margin: 0 auto; border: 1px solid #ccc; line-height: 26px; font-size: 12px; overflow: hidden;} .myscroll li { height: 26px; margin-left: 25px;} .myscroll a { color: #333; text-decoration: none;} .myscroll a:hover { color: #ED5565; text-decoration: underline;} </style>如何修改让他显示的效果靠左
时间: 2024-03-16 11:43:01 浏览: 17
您可以将 '.myscroll' 的 'margin' 属性改为 '0 auto 0 0',并将 '.myscroll li' 的 'margin-left' 属性改为 '0',即可让效果靠左显示:
```html
<style>
* {
margin: 0;
padding: 0;
}
.myscroll {
width: 300px;
height: 260px;
margin: 0 auto 0 0;
border: 1px solid #ccc;
line-height: 26px;
font-size: 12px;
overflow: hidden;
}
.myscroll li {
height: 26px;
margin-left: 0;
}
.myscroll a {
color: #333;
text-decoration: none;
}
.myscroll a:hover {
color: #ED5565;
text-decoration: underline;
}
</style>
```
相关问题
改进代码当点击“发布”按钮时,可以在小框里面输入内容并发送弹幕<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title></title> <style type="text/css"> *{ margin: 0; padding: 0; } .entirety{ width: 800px; height: 500px; border: 1px solid black; margin: 100px auto 100px; position: relative; } .littlebox{ width: 600px; height:300px; border: 1px solid black; margin:auto; left: 0; top: 0; right: 0; bottom: 0; position: absolute; } p{ margin: 380px 20px 10px; } </style> </head> <body> <div class="entirety"> <p>微博内容:</p> <button>发布</button> <div class="littlebox"></div> </div> <script src="../jquery-3.7.0.js"></script> </body> </html>
可以通过添加一些JavaScript代码来实现这个功能。具体代码如下所示:
```
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
.entirety{
width: 800px;
height: 500px;
border: 1px solid black;
margin: 100px auto 100px;
position: relative;
}
.littlebox{
width: 600px;
height:300px;
border: 1px solid black;
margin:auto;
left: 0;
top: 0;
right: 0;
bottom: 0;
position: absolute;
}
p{
margin: 380px 20px 10px;
}
</style>
</head>
<body>
<div class="entirety">
<p>微博内容:</p>
<button id="sendBtn">发布</button>
<div class="littlebox"></div>
</div>
<script src="../jquery-3.7.0.js"></script>
<script>
// 获取发布按钮和小框元素
var sendBtn = document.getElementById("sendBtn");
var littlebox = document.querySelector(".littlebox");
// 给发布按钮绑定点击事件
sendBtn.addEventListener("click", function() {
// 获取输入的内容并创建弹幕元素
var inputVal = prompt("请输入弹幕内容:");
var danmu = document.createElement("p");
danmu.innerText = inputVal;
// 随机设置弹幕的位置和颜色
danmu.style.position = "absolute";
danmu.style.left = Math.random() * 550 + "px";
danmu.style.top = Math.random() * 250 + "px";
danmu.style.color = getRandomColor();
// 将弹幕插入到小框中
littlebox.appendChild(danmu);
});
// 随机生成颜色值的函数
function getRandomColor() {
return "#" + Math.floor(Math.random() * 16777215).toString(16);
}
</script>
</body>
</html>
```
在这个代码中,我们首先给发布按钮添加了一个id属性,方便通过JavaScript获取。然后在JavaScript中,我们获取了发布按钮和小框元素,并给发布按钮绑定了一个点击事件。当用户点击发布按钮时,会弹出一个提示框让用户输入弹幕的内容。我们通过创建一个p元素来表示弹幕,并将输入的内容赋值给它的innerText属性。接着,我们随机设置弹幕的位置和颜色,并将弹幕插入到小框中。最后,我们还添加了一个随机生成颜色值的函数,用于生成弹幕的随机颜色。
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>小精灵转呀转~</title> <style> * { list-style: none; margin: 0; padding: 0; } .box2 { width: 260px; height: 190px; margin: 100px auto; /* background-color: skyblue; */ } .box2 li { float: left; width: 24px; height: 24px; background-color: pink; margin: 10px 0 30px 30px; background: url(qb.png) no-repeat; } </style> </head> <body> <div class="box2"> <ul> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> </ul> </div> <script> var change = document.querySelectorAll('li'); for (var i = 0; i < change.length; i++) { var index = i * 44; change[i].style.backgroundPosition = '0 -' + index + 'px'; } </script> </body> </html>用其他方法实现这个效果,至少三种
这段 HTML + CSS + JavaScript 代码实现的效果是将一张包含了多个小图片的图片作为背景,然后通过 JavaScript 代码实现将每个小图片的位置进行调整,从而实现一个转盘的效果。
下面是三种用其他方法实现这个效果的方式:
1. 用 CSS3 动画实现转盘效果
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>小精灵转呀转~</title>
<style>
* {
list-style: none;
margin: 0;
padding: 0;
}
.box2 {
width: 260px;
height: 190px;
margin: 100px auto;
position: relative;
}
.box2 ul {
position: absolute;
top: 0;
left: 0;
animation: rotate 5s linear infinite;
}
.box2 li {
width: 24px;
height: 24px;
background-color: pink;
background: url(qb.png) no-repeat;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
@keyframes rotate {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
</style>
</head>
<body>
<div class="box2">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</body>
</html>
```
2. 用 Canvas 实现转盘效果
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>小精灵转呀转~</title>
<style>
* {
list-style: none;
margin: 0;
padding: 0;
}
.box2 {
width: 260px;
height: 190px;
margin: 100px auto;
position: relative;
}
.box2 canvas {
position: absolute;
top: 0;
left: 0;
}
</style>
</head>
<body>
<div class="box2">
<canvas id="canvas" width="260" height="190"></canvas>
</div>
<script>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var img = new Image();
img.src = 'qb.png';
img.onload = function() {
var count = 0;
setInterval(function() {
count += 44;
if (count >= 528) {
count = 0;
}
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(img, 0, count, 24, 24, 118, 82, 24, 24);
}, 100);
}
</script>
</body>
</html>
```
3. 用 SVG 实现转盘效果
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>小精灵转呀转~</title>
<style>
* {
list-style: none;
margin: 0;
padding: 0;
}
.box2 {
width: 260px;
height: 190px;
margin: 100px auto;
position: relative;
}
.box2 svg {
position: absolute;
top: 0;
left: 0;
transform-origin: 50% 50%;
animation: rotate 5s linear infinite;
}
@keyframes rotate {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
</style>
</head>
<body>
<div class="box2">
<svg viewBox="0 0 24 528" width="24" height="528">
<use xlink:href="#icon"></use>
</svg>
<svg style="display: none;">
<symbol id="icon">
<image href="qb.png" width="24" height="528"></image>
</symbol>
</svg>
</div>
</body>
</html>
```