.input-item::placeholder { text-transform: uppercase; }

This CSS code sets the text-transform property to uppercase for the placeholder text in an input field. When a user enters text into the field, it will display in uppercase, making it easier to read and ensuring consistency of formatting.

相关问题

html css js登录注册界面 例子

以下是一个简单的HTML CSS JS登录注册界面的例子：

HTML代码：

<div class="container">
  <div class="form-container sign-up-container">
    <form action="#">
      <h1>Create Account</h1>
      <input type="text" placeholder="Name" />
      <input type="email" placeholder="Email" />
      <input type="password" placeholder="Password" />
      <button>Sign Up</button>
    </form>
  </div>
  <div class="form-container sign-in-container">
    <form action="#">
      <h1>Sign in</h1>
      <input type="email" placeholder="Email" />
      <input type="password" placeholder="Password" />
      <button>Sign In</button>
    </form>
  </div>
  <div class="overlay-container">
    <div class="overlay">
      <div class="overlay-panel overlay-left">
        <h1>Welcome Back!</h1>
        <p>To keep connected with us please login with your personal info</p>
        <button class="ghost" id="signIn">Sign In</button>
      </div>
      <div class="overlay-panel overlay-right">
        <h1>Hello, Friend!</h1>
        <p>Enter your personal details and start journey with us</p>
        <button class="ghost" id="signUp">Sign Up</button>
      </div>
    </div>
  </div>
</div>

CSS代码：

@import url('https://fonts.googleapis.com/css?family=Montserrat:400,800');

* {
  box-sizing: border-box;
}

body {
  background: #f6f5f7;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  font-family: 'Montserrat', sans-serif;
  height: 100vh;
  margin: -20px 0 50px;
}

h1 {
  font-weight: bold;
  margin: 0;
}

h2 {
  text-align: center;
}

p {
  font-size: 14px;
  font-weight: 100;
  line-height: 20px;
  letter-spacing: 0.5px;
  margin: 20px 0 30px;
}

span {
  font-size: 12px;
}

a {
  color: #333;
  font-size: 14px;
  text-decoration: none;
  margin: 15px 0;
}

button {
  border-radius: 20px;
  border: 1px solid #ff4b2b;
  background-color: #ff4b2b;
  color: #FFFFFF;
  font-size: 12px;
  font-weight: bold;
  padding: 12px 45px;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: transform 80ms ease-in;
}

button:active {
  transform: scale(0.95);
}

button:focus {
  outline: none;
}

button.ghost {
  background-color: transparent;
  border-color: #FFFFFF;
}

form {
  background-color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0 50px;
  height: 100%;
  text-align: center;
}

input {
  background-color: #eee;
  border: none;
  padding: 12px 15px;
  margin: 8px 0;
  width: 100%;
}

.container {
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 14px 28px rgba(0,0,0,0.25), 
              0 10px 10px rgba(0,0,0,0.22);
  position: relative;
  overflow: hidden;
  width: 768px;
  max-width: 100%;
  min-height: 480px;
}

.form-container {
  position: absolute;
  top: 0;
  height: 100%;
  transition: all 0.6s ease-in-out;
}

.sign-in-container {
  left: 0;
  width: 50%;
  z-index: 2;
}

.container.right-panel-active .sign-in-container {
  transform: translateX(100%);
}

.sign-up-container {
  left: 0;
  width: 50%;
  opacity: 0;
  z-index: 1;
}

.container.right-panel-active .sign-up-container {
  transform: translateX(100%);
  opacity: 1;
  z-index: 5;
  animation: show 0.6s;
}

@keyframes show {
  0%, 49.99% {
    opacity: 0;
    z-index: 1;
  }
  
  50%, 100% {
    opacity: 1;
    z-index: 5;
  }
}

.overlay-container {
  position: absolute;
  top: 0;
  left: 50%;
  width: 50%;
  height: 100%;
  overflow: hidden;
  transition: transform 0.6s ease-in-out;
  z-index: 100;
}

.container.right-panel-active .overlay-container{
  transform: translateX(-100%);
}

.overlay {
  background: #ff416c;
  background: -webkit-linear-gradient(to right, #ff4b2b, #ff416c);
  background: linear-gradient(to right, #ff4b2b, #ff416c);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 0 0;
  color: #FFFFFF;
  position: relative;
  left: -100%;
  height: 100%;
  width: 200%;
  transform: translateX(0);
  transition: transform 0.6s ease-in-out;
}

.container.right-panel-active .overlay {
  transform: translateX(50%);
}

.overlay-panel {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0 40px;
  text-align: center;
  top: 0;
  height: 100%;
  width: 50%;
  transform: translateX(0);
  transition: transform 0.6s ease-in-out;
}

.overlay-left {
  transform: translateX(-20%);
}

.container.right-panel-active .overlay-left {
  transform: translateX(0);
}

.overlay-right {
  right: 0;
  transform: translateX(0);
}

.container.right-panel-active .overlay-right {
  transform: translateX(20%);
}

JavaScript代码：

const signUpButton = document.getElementById('signUp');
const signInButton = document.getElementById('signIn');
const container = document.getElementById('container');

signUpButton.addEventListener('click', () => {
  container.classList.add('right-panel-active');
});

signInButton.addEventListener('click', () => {
  container.classList.remove('right-panel-active');
});

你可以将这些代码复制到一个HTML文件中，并通过浏览器打开该文件以查看结果。请注意，这只是一个简单的示例，您可以根据需求进行修改和扩展。

写一个登录和注册的页面

好的，我可以为您提供一个简单的登录和注册页面的代码示例，您可以根据自己的需要进行修改和优化。

HTML 代码：

<!DOCTYPE html>
<html>
<head>
	<title>Login and Register Page</title>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link rel="stylesheet" href="style.css">
</head>
<body>
	<div class="container">
		<div class="form-container sign-up-container">
			<form action="#">
				<h1>Create Account</h1>
				<input type="text" placeholder="Name" />
				<input type="email" placeholder="Email" />
				<input type="password" placeholder="Password" />
				<button>Sign Up</button>
			</form>
		</div>
		<div class="form-container sign-in-container">
			<form action="#">
				<h1>Sign in</h1>
				<input type="email" placeholder="Email" />
				<input type="password" placeholder="Password" />
				<a href="#">Forgot your password?</a>
				<button>Sign In</button>
			</form>
		</div>
		<div class="overlay-container">
			<div class="overlay">
				<div class="overlay-panel overlay-left">
					<h1>Welcome Back!</h1>
					<p>To keep connected with us please login with your personal info</p>
					<button class="ghost" id="signIn">Sign In</button>
				</div>
				<div class="overlay-panel overlay-right">
					<h1>Hello, Friend!</h1>
					<p>Enter your personal details and start journey with us</p>
					<button class="ghost" id="signUp">Sign Up</button>
				</div>
			</div>
		</div>
	</div>
	<script src="script.js"></script>
</body>
</html>

CSS 代码：

@import url('https://fonts.googleapis.com/css?family=Montserrat:400,800');

* {
	box-sizing: border-box;
}

body {
	background: #f6f5f7;
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	font-family: 'Montserrat', sans-serif;
	height: 100vh;
	margin: -20px 0 50px;
}

h1 {
	font-weight: bold;
	margin: 0;
}

h2 {
	text-align: center;
}

p {
	font-size: 14px;
	font-weight: 100;
	line-height: 20px;
	margin: 20px 0 30px;
}

span {
	font-size: 12px;
}

a {
	color: #333;
	font-size: 14px;
	text-decoration: none;
	margin: 15px 0;
}

button {
	border-radius: 20px;
	border: 1px solid #FF4B2B;
	background-color: #FF4B2B;
	color: #FFFFFF;
	font-size: 12px;
	font-weight: bold;
	padding: 12px 45px;
	letter-spacing: 1px;
	text-transform: uppercase;
	transition: transform 80ms ease-in;
}

button:active {
	transform: scale(0.95);
}

button:focus {
	outline: none;
}

button.ghost {
	background-color: transparent;
	border-color: #FFFFFF;
}

form {
	background-color: #FFFFFF;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	padding: 0 50px;
	height: 100%;
	text-align: center;
}

input {
	background-color: #eee;
	border: none;
	padding: 12px 15px;
	margin: 8px 0;
	width: 100%;
}

.container {
	background-color: #fff;
	border-radius: 10px;
	box-shadow: 0 14px 28px rgba(0,0,0,0.25), 
			  0 10px 10px rgba(0,0,0,0.22);
	position: relative;
	overflow: hidden;
	width: 768px;
	max-width: 100%;
	min-height: 480px;
}

.form-container {
	position: absolute;
	top: 0;
	height: 100%;
	transition: all 0.6s ease-in-out;
}

.sign-in-container {
	left: 0;
	width: 50%;
	z-index: 2;
}

.container.right-panel-active .sign-in-container {
	transform: translateX(100%);
}

.sign-up-container {
	left: 0;
	width: 50%;
	opacity: 0;
	z-index: 1;
}

.container.right-panel-active .sign-up-container {
	transform: translateX(100%);
	opacity: 1;
	z-index: 5;
	animation: show 0.6s;
}

.overlay-container {
	position: absolute;
	top: 0;
	left: 50%;
	width: 50%;
	height: 100%;
	overflow: hidden;
	transition: transform 0.6s ease-in-out;
	z-index: 100;
}

.container.right-panel-active .overlay-container{
	transform: translateX(-100%);
}

.overlay {
	background: #FF416C;
	background: -webkit-linear-gradient(to right, #FF4B2B, #FF416C);
	background: linear-gradient(to right, #FF4B2B, #FF416C);
	background-repeat: no-repeat;
	background-size: cover;
	background-position: 0 0;
	color: #FFFFFF;
	position: relative;
	left: -100%;
	height: 100%;
	width: 200%;
	transform: translateX(0);
	transition: transform 0.6s ease-in-out;
}

.container.right-panel-active .overlay {
	transform: translateX(50%);
}

.overlay-panel {
	position: absolute;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	padding: 0 40px;
	text-align: center;
	top: 0;
	height: 100%;
	width: 50%;
	transform: translateX(0);
	transition: transform 0.6s ease-in-out;
}

.overlay-left {
	transform: translateX(-20%);
}

.container.right-panel-active .overlay-left {
	transform: translateX(0);
}

.overlay-right {
	right: 0;
	transform: translateX(0);
}

.container.right-panel-active .overlay-right {
	transform: translateX(20%);
}

.social-container {
	margin: 20px 0;
}

.social-container a {
	border: 1px solid #DDDDDD;
	border-radius: 50%;
	display: inline-flex;
	justify-content: center;
	align-items: center;
	margin: 0 5px;
	height: 40px;
	width: 40px;
}

@media (max-width: 768px) {
	.container {
		min-height: 800px;
		height: 100%;
		width: 100%;
	}
	.overlay {
		width: 100%;
		left: 0;
		height: 100%;
	}
	.form-container {
		width: 100%;
		height: 100%;
		padding: 10%;
	}
	.sign-in-container {
		top: 0;
		width: 100%;
	}
	.sign-up-container {
		top: 0;
		width: 100%;
	}
	.overlay-container {
		width: 100%;
		left: 0;
	}
	.social-container {
		margin: 20px 0 0;
	}
	.social-container a {
		height: 40px;
		width: 40px;
	}
	#signIn, #signUp {
		margin: 0;
	}
}

JavaScript 代码：

const signUpButton = document.getElementById('signUp');
const signInButton = document.getElementById('signIn');
const container = document.getElementById('container');

signUpButton.addEventListener('click', () => {
	container.classList.add("right-panel-active");
});

signInButton.addEventListener('click', () => {
	container.classList.remove("right-panel-active");
});

这是一个基于 HTML、CSS 和 JavaScript 的简单登录和注册页面，包括两个表单，一个用于注册，一个用于登录。页面还包括一个切换按钮，可以在注册和登录表单之间切换。您可以将此代码复制到您的项目中，并根据需要进行修改和优化。