一、前言

在我们的 html 学习过程中，会用到并见识到各种各样的实例，以及各种插件，并且有些 web 网页中的小插件又非常的吸引眼球，提升 web 网页的层次，显得非常好看并且非常使用。在本系列中，我将持续为大家更新有趣且使用的 html 实例，放在 web 网页中，凸显效果。

特点一：都是符合学校或者学生考试期末作业的水平，都是最基础的简单的 html 样例，提升web网页整理效果，都是 div+css 框架原创代码写的，内容包括 js / css，也包含视频+音乐+flash 等元素的插入…

特点二：内容包括多种丰富类型，例如：倒计时，404页面，Blog顶置卡片设计 (css+js)，To-Do-List设计 (css+js)，火柴盒动画 (css)，日历便签设计 (css+js)，搜索框设计 (css+js)，卡片式图片展示 (css+js)，咖啡选择 (css+js)……

可满足多种需求，欢迎大家下载！

二、往期作品回顾

有趣的HTML实例（一）倒计时_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（二） 404页面_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（三）加载页面动画_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（四）旋转菜单_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（五）加载页面动画Ⅱ（css）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（六）卡片翻转时钟_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（七）注册登录界面Ⅱ（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（八）一个很有趣的动态背景（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（九）文本变形动画（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（十）悬停时有旋转效果的图标_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（十一）烟花特效（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（十二）早安、晚安动画（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（十三）咖啡选择（css+js）_Enovo_飞鱼的博客-CSDN博客

有趣的HTML实例（十四）窗边风景动画（css+js）_Enovo_飞鱼的博客-CSDN博客

三、作品介绍

1.作品简介：HTML响应式布局网站源码！兼容 pc 以及移动端，内涵 js 交互，ui 交互。直接点击即可查看效果！

2.作品编辑：个人主页网页设计题材，代码为 html+css 布局制作，作品下载后可使用任意HTML编辑软件（例如：DW、HBuilder、Vscode 、Sublime 所有编辑器均可使用）。

3.作品技术：使用DIV+CSS制作了网页背景图、鼠标经过及选中导航变色效果、下划线等。

四、本期代码介绍

一款简单的 HTML+ CSS+JS 咖啡选择（css+js）实例

1、HTML

2、CSS

3、JS

4、舒适的画面感

5、注册登录界面

可通用多种不同情景，放置在web网页上，可以作为跳转页面之后使用

五、效果显示

可使用在多种情景下，提升层次轮廓效果、美化界面、自定义文字修改——>

根据需求修改

六、编码实现

显示完整代码

注意路径(⊙o⊙)？

o(*￣▽￣*)ブ

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Enovo注册登录界面</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.1/normalize.min.css">
<link rel="stylesheet" href="./style.css">
</head>
<body>
<div class="container right-panel-active">
    <!-- 注册 -->
    <div class="container_form container--signup">
        <form action="#" class="form" id="form1">
            <h2 class="form_title">Sign Up</h2>
            <input type="text" placeholder="User" class="input" />
            <input type="email" placeholder="Email" class="input" />
            <input type="password" placeholder="Password" class="input" />
            <button class="btn">Sign Up</button>
        </form>
    </div>

    <!-- 登录 -->
    <div class="container_form container--signin">
        <form action="#" class="form" id="form2">
            <h2 class="form_title">Sign In</h2>
            <input type="email" placeholder="Email" class="input" />
            <input type="password" placeholder="Password" class="input" />
            <a href="#" class="link">Forgot your password?</a>
            <button class="btn">Sign In</button>
        </form>
    </div>

    <!-- 浮层 -->
    <div class="container_overlay">
        <div class="overlay">
            <div class="overlay_panel overlay--left">
                <button class="btn" id="signIn">Sign In</button>
            </div>
            <div class="overlay_panel overlay--right">
                <button class="btn" id="signUp">Sign Up</button>
            </div>
        </div>
    </div>
</div>

<!-- 背景 -->
<div class="slidershow">
    <div class="slidershow--image" style="background-image: url('https://source.unsplash.com/Snqdjm71Y5s')"></div>
    <div class="slidershow--image" style="background-image: url('https://source.unsplash.com/5APj-fzKE-k')"></div>
    <div class="slidershow--image" style="background-image: url('https://source.unsplash.com/wnbBH_CGOYQ')"></div>
    <div class="slidershow--image" style="background-image: url('https://source.unsplash.com/OkTfw7fXLPk')"></div>
</div>

<!-- partial -->
  <script src="./script.js"></script>
</body>
</html>

style.css

:root {
	/* 颜色 */
	--white: #e9e9e9;
	--gray: #333;
	--blue: #095c91;
	--blue-r: #315a7491;
	--lightblue: #0393a3;

	/* 圆角 */
	--button-radius: 0.7rem;

	/* 大小 */
	--max-width: 758px;
	--max-height: 420px;

	font-size: 16px;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
		Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

body {
	align-items: center;
	background-color: var(--white);
	background-attachment: fixed;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	display: grid;
	height: 100vh;
	place-items: center;
}

.form_title {
	font-weight: 300;
	margin: 0;
	margin-bottom: 1.25rem;
}

.link {
	color: var(--gray);
	font-size: 0.9rem;
	margin: 1.5rem 0;
	text-decoration: none;
}

.container {
	background-color: var(--white);
	border-radius: var(--button-radius);
	box-shadow: 0 0.9rem 1.7rem rgba(0, 0, 0, 0.25),
		0 0.7rem 0.7rem rgba(0, 0, 0, 0.22);
	height: var(--max-height);
	max-width: var(--max-width);
	overflow: hidden;
	position: relative;
	width: 100%;
}

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

.container--signin {
	left: 0;
	width: 50%;
	z-index: 5;
}

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

.container--signup {
	left: 0;
	opacity: 0;
	width: 50%;
	z-index: 4;
}

.container.right-panel-active .container--signup {
	-webkit-animation: show 0.6s;
	        animation: show 0.6s;
	opacity: 1;
	transform: translateX(100%);
	z-index: 8;
}

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

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

.overlay {
	background-color: rgba(255, 255, 255, 0.25);
	background-attachment: fixed;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	height: 100%;
	left: -100%;
	position: relative;
	transform: translateX(0);
	transition: transform 0.6s ease-in-out;
	width: 200%;
}

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

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

.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%);
}

.btn {
	background-color: var(--blue);
	background-image: linear-gradient(90deg, var(--blue) 0%, var(--lightblue) 74%);
	border-radius: 20px;
	border: 0.2px solid var(--blue-r);
	color: var(--white);
	cursor: pointer;
	font-size: 0.8rem;
	font-weight: bold;
	letter-spacing: 0.1rem;
	padding: 0.9rem 4rem;
	text-transform: uppercase;
	transition: transform 80ms ease-in;
}

.form > .btn {
	margin-top: 1.5rem;
}

.btn:active {
	transform: scale(0.95);
}

.btn:focus {
	outline: none;
}

.form {
    background-color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 3rem;
    height: 100%;
    text-align: center;
}

.input {
    background-color: #fff;
    border: none;
    padding: 0.9rem 0.9rem;
    margin: 0.5rem 0;
    width: 100%;
}

@-webkit-keyframes show {
    0%,
    49.99% {
        opacity: 0;
        z-index: 4;
    }

    50%,
    100% {
        opacity: 1;
        z-index: 8;
    }
}

@keyframes show {
    0%,
    49.99% {
        opacity: 0;
        z-index: 4;
    }

    50%,
    100% {
        opacity: 1;
        z-index: 8;
    }
}


.slidershow {
    position: absolute;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.slidershow--image {
    position: absolute;
    width: 100%;
    height: 100%;
    background: no-repeat 50% 50%;
    background-size: cover;
    -webkit-animation-name: kenburns;
    animation-name: kenburns;
    -webkit-animation-timing-function: linear;
    animation-timing-function: linear;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    -webkit-animation-duration: 16s;
    animation-duration: 16s;
    opacity: 1;
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
}

.slidershow--image:nth-child(1) {
    -webkit-animation-name: kenburns-1;
    animation-name: kenburns-1;
    z-index: 3;
}

.slidershow--image:nth-child(2) {
    -webkit-animation-name: kenburns-2;
    animation-name: kenburns-2;
    z-index: 2;
}

.slidershow--image:nth-child(3) {
    -webkit-animation-name: kenburns-3;
    animation-name: kenburns-3;
    z-index: 1;
}

.slidershow--image:nth-child(4) {
    -webkit-animation-name: kenburns-4;
    animation-name: kenburns-4;
    z-index: 0;
}

@-webkit-keyframes kenburns-1 {
    0% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    1.5625% {
        opacity: 1;
    }
    23.4375% {
        opacity: 1;
    }
    26.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    98.4375% {
        opacity: 0;
        -webkit-transform: scale(1.21176);
        transform: scale(1.21176);
    }
    100% {
        opacity: 1;
    }
}

@keyframes kenburns-1 {
    0% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    1.5625% {
        opacity: 1;
    }
    23.4375% {
        opacity: 1;
    }
    26.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    98.4375% {
        opacity: 0;
        -webkit-transform: scale(1.21176);
        transform: scale(1.21176);
    }
    100% {
        opacity: 1;
    }
}

@-webkit-keyframes kenburns-2 {
    23.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    26.5625% {
        opacity: 1;
    }
    48.4375% {
        opacity: 1;
    }
    51.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@keyframes kenburns-2 {
    23.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    26.5625% {
        opacity: 1;
    }
    48.4375% {
        opacity: 1;
    }
    51.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@-webkit-keyframes kenburns-3 {
    48.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    51.5625% {
        opacity: 1;
    }
    73.4375% {
        opacity: 1;
    }
    76.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@keyframes kenburns-3 {
    48.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    51.5625% {
        opacity: 1;
    }
    73.4375% {
        opacity: 1;
    }
    76.5625% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
}

@-webkit-keyframes kenburns-4 {
    73.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    76.5625% {
        opacity: 1;
    }
    98.4375% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
}

@keyframes kenburns-4 {
    73.4375% {
        opacity: 1;
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
    }
    76.5625% {
        opacity: 1;
    }
    98.4375% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
}

script.js

const signInBtn = document.getElementById("signIn");
const signUpBtn = document.getElementById("signUp");
const firstForm = document.getElementById("form1");
const secondForm = document.getElementById("form2");
const container = document.querySelector(".container");

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

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

firstForm.addEventListener("submit", (e) => e.preventDefault());
secondForm.addEventListener("submit", (e) => e.preventDefault());