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社区首页 >问答首页 >CSS动画- HTML/CSS

问CSS动画- HTML/CSS
EN

Stack Overflow用户
提问于 2021-12-29 03:24:09
回答 2查看 84关注 0票数 0

我有以下代码：

​

代码语言：javascript
复制
/* Contact Form */

input[type=text],
[type=email],
select,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #555;
  margin-top: 6px;
  margin-bottom: 16px;
  resize: vertical;
}

input[type=submit] {
  background-color: #0563bb;
  color: white;
  padding: 12px 20px;
  border: none;
  cursor: pointer;
}

input[type=submit]:hover {
  opacity: 0.9;
}

.contactform {
  position: relative;
  border-radius: 50px;
  background-color: #f2f2f2;
  padding: 5px;
  z-index: 2;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: auto;
  margin-top: 1%;
  width: 100%;
  animation-name: gradient;
  animation-duration: 3s;
  animation-iteration-count: infinite;
}

.contactform:hover {
  animation-name: gradient;
  animation-duration: 15s;
  animation-iteration-count: infinite;
}

.column {
  float: center;
  width: 50%;
  margin-top: 6px;
  padding: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}

@media screen and (max-width: 600px) {
  .column,
  input[type=submit] {
    width: auto;
    margin-top: 0;
  }
}

@keyframes shake {
  10%,
  90% {
    transform: translate3d(-1px, 0, 0);
  }
  20%,
  80% {
    transform: translate3d(2px, 0, 0);
  }
  30%,
  50%,
  70% {
    transform: translate3d(-4px, 0, 0);
  }
  40%,
  60% {
    transform: translate3d(4px, 0, 0);
  }
}
代码语言：javascript
复制
<section id="contact">
  <div class="container" data-aos="fade-up">
    <div class="contactform">
      <div style="text-align:center">
        <div class="section-title">
          <h2><br/>Get In Touch</h2>
        </div>
        <p>Feel Free To Reach Out To Me Through This Form! </p>
      </div>
      <div class="row">
        <div class="column">
          <form name="myform" action="thankyou.html" method="POST" novalidate>
            <label for="firstname">First Name</label>
            <input type="text" id="first name" name="firstname" placeholder="Your First Name.." required>
            <label for="lastname">Last Name</label>
            <input type="text" id="lastname" name="lastname" placeholder="Your Last Name.." required>
            <label for="email">Email:</label>
            <input type="email" id="email" name="email" placeholder="Your Email.." required>
            <label for="subject">Subject</label>
            <textarea id="subject" name="subject" placeholder="Lets Collaborate.." style="height:170px" required></textarea>
            <input type="submit" value="Submit">
          </form>
        </div>
      </div>
    </div>
  </div>
</section>

​

我基本上想添加一个动画，在输入字段中添加一个动画。基本上，我希望我的预期输出是这样的：

​

代码语言：javascript
复制
* {
  --input-height: 3rem;
}

section {
  height: 100vh;
  width: 100vw;
  display: grid;
  place-content: center;
}

.input-container input {
  height: var(--input-height);
  width: 80vw;
  font-size: 2rem;
}

.input-container {
  position: relative;
  display: grid;
  place-items: center start;
}

.input-container label {
  position: absolute;
  left: 1rem;
  font-size: 1.5rem;
  color: rgb(90, 90, 90);
  background-color: white;
  transition-duration: 0.5s;
}

.input-container input:focus~label {
  position: absolute;
  font-size: 0.7rem;
  top: -0.6rem;
  padding: 0.2em;
  left: 0.5rem;
  color: rgb(0, 81, 255);
  background-color: white;
  transition-duration: 0.2s;
  z-index: 2;
}
代码语言：javascript
复制
<!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>Document</title>
  <link rel="stylesheet" href="style.css">
</head>

<body>
  <section>
    <form action="">
      <div class="input-container">
        <input type="text" name="" id="my-input">
        <label for="my-input">hello world</label>
      </div>
    </form>
  </section>
</body>

</html>

​

如您所见，当您单击输入字段时，文本会缩短，并在输入字段的顶部对齐。我想要这个，但有上面的联系方式。我如何将上述代码合并到我之前发送的联系人表单代码中？我尝试使用相同的逻辑，但由于我在最上面发送的代码与上面发送的代码略有不同，所以我陷入了困境。关于我如何完成这项任务，有什么建议吗？任何帮助都将不胜感激！

javascript
html
jquery
css
EN

回答 2

Stack Overflow用户

发布于 2021-12-29 04:18:48

我会使用来自webdevtrick.com和morioh.com的一些代码，我将代码改为普通JavaScript

​

代码语言：javascript
复制
/** Code By Webdevtrick ( https://webdevtrick.com )  **/

const inputs = document.querySelectorAll("input");

inputs.forEach((input) => {
  input.addEventListener("focusin", (e) => {
    e.target.previousElementSibling.classList.add("active");
  });

  input.addEventListener("focusout", (e) => {
    e.target.previousElementSibling.classList.remove("active");
  });
});
代码语言：javascript
复制
/** Code By Webdevtrick ( https://webdevtrick.com ) **/

* {
  letter-spacing: 3px;
  font-family: "Alegreya Sans SC", sans-serif;
}

body {
  color: white;
  background-color: #f05855;
}

h1 {
  font-size: 60px;
  margin: 0px;
  padding: 0px;
  text-align: center;
}

div.main {
  width: 700px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  vertical-align: middle;
}

div.main div {
  position: relative;
  margin: 40px 0;
}

label {
  position: absolute;
  top: 0;
  font-size: 30px;
  margin: 10px;
  padding: 0 10px;
  background-color: #f05855;
  -webkit-transition: top 0.2s ease-in-out, font-size 0.2s ease-in-out;
  transition: top 0.2s ease-in-out, font-size 0.2s ease-in-out;
}

.active {
  top: -25px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 6px;
  text-transform: uppercase;
}

input[type="text"] {
  width: 100%;
  padding: 20px;
  border: 2px solid white;
  font-size: 20px;
  font-weight: 800;
  background-color: #f05855;
  color: white;
}

input[type="text"]:focus {
  outline: none;
}
代码语言：javascript
复制
<!DOCTYPE html>
<!--Code By Webdevtrick ( https://webdevtrick.com )-->
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <title>CSS Input Label Animation | Webdevtrick.com</title>

  <link href="https://fonts.googleapis.com/css?family=Alegreya+Sans+SC&display=swap" rel="stylesheet" />
  <link rel="stylesheet" href="styles.css" />
</head>

<body>
  <div class="main">
    <h1>CSS Label Animation</h1>
    <div>
      <label for="FirName">First Name</label>
      <input id="FirName" type="text" class="styl" />
    </div>

    <div>
      <label for="LasName">Last Name</label>
      <input id="LasName" type="text" class="styl" />
    </div>

    <div>
      <label for="Messag">Your Message</label>
      <input id="Messag" type="text" class="styl" />
    </div>
  </div>
  <script src="script.js"></script>
</body>

</html>

​

票数 0
EN

Stack Overflow用户

发布于 2021-12-29 11:40:06

你可以试试这个，我用动画修改了你的模板。

​

代码语言：javascript
复制
* {
  --input-height: 3rem;
}
.contactform {
  position: relative;
  border-radius: 50px;
  background-color: #f2f2f2;
  padding: 5px;
  z-index: 2;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: auto;
  margin-top: 1%;
  width: 100%;
  animation-name: gradient;
  animation-duration: 3s;
  animation-iteration-count: infinite;
}
.contactform:hover {
  animation-name: gradient;
  animation-duration: 15s;
  animation-iteration-count: infinite;
}
.row:after {
  content: "";
  display: table;
  clear: both;
}
.column {
  float: center;
  width: 50%;
  margin-top: 6px;
  padding: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
section {
  height: 100vh;
  width: 100vw;
  display: grid;
  place-content: center;
}

.input-container input {
  height: var(--input-height);
  width: 80vw;
  font-size: 2rem;
}

.input-container {
  position: relative;
  display: grid;
  place-items: center start;
  margin-top: 6px;
  margin-bottom: 16px;
  width:50%;
}

.input-container label {
  position: absolute;
  left: 1rem;
  font-size: 1.5rem;
  color: rgb(90, 90, 90);
  background-color: white;
  transition-duration: 0.5s;

}

.input-container input:focus~label {
  position: absolute;
  font-size: 0.7rem;
  top: -0.6rem;
  padding: 0.2em;
  left: 0.5rem;
  color: rgb(0, 81, 255);
  background-color: white;
  transition-duration: 0.2s;
  z-index: 2;
  
}
input[type=submit] {
  background-color: #0563bb;
  color: white;
  padding: 12px 20px;
  border: none;
  cursor: pointer;
}

input[type=submit]:hover {
  opacity: 0.9;
}
@media screen and (max-width: 600px) {
  .column,
  input[type=submit] {
    width: auto;
    margin-top: 0;
  }
}

@keyframes shake {
  10%,
  90% {
    transform: translate3d(-1px, 0, 0);
  }
  20%,
  80% {
    transform: translate3d(2px, 0, 0);
  }
  30%,
  50%,
  70% {
    transform: translate3d(-4px, 0, 0);
  }
  40%,
  60% {
    transform: translate3d(4px, 0, 0);
  }
代码语言：javascript
复制
<!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>Document</title>
  <link rel="stylesheet" href="style.css">
</head>

<body>
</br></br>
  <section id="contact">
  <div class="container" data-aos="fade-up">
    <div class="contactform">
      <div style="text-align:center">
        <div class="section-title">
          <h2><br/>Get In Touch</h2>
        </div>
        <p>Feel Free To Reach Out To Me Through This Form! </p>
      </div>
  <div class="row">
        <div class="column">
    <form name="myform" action="thankyou.html" method="POST" novalidate>
      <div class="input-container">
     <input type="text" id="first name" name="firstname" required>
        <label for="firstname">First Name</label>
      </div>
      <div class="input-container">
     <input type="text" id="lastname" name="lastname" required>
         <label for="lastname">Last Name</label>
      </div>
      
      <input type="submit" value="Submit">
    </form>
    </div>
    </div>
    </div>
    
  </section>
</body>

​

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/70514839

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