炫酷的CSS3响应式表单

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css代码：

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #03080a;
}

.container {
    width: 80%;
    padding: 20px;
}

.container h2 {
    width: 100%;
    color: #45f3ff;
    font-size: 36px;
    text-align: center;
    margin-bottom: 10px;
}

.container .row100 {
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.container .row100 .col {
    position: relative;
    width: 100%;
    padding: 0 10px;
    margin: 30px 0 10px;
    transition: 0.5s;
}

.container .row100 .inputBox {
    position: relative;
    width: 100%;
    height: 40px;
    color: #45f3ff;
}

.container .row100 .inputBox input,
.container .row100 .inputBox textarea {
    position: absolute;
    width: 100%;
    height: 100%;
    background: transparent;
    box-shadow: none;
    border: none;
    outline: none;
    font-size: 18px;
    padding: 0 10px;
    z-index: 1;
    color: #000;
}

.container .row100 .inputBox .text {
    position: absolute;
    top: 0;
    left: 0;
    line-height: 40px;
    font-size: 18px;
    padding: 0 10px;
    display: block;
    transition: 0.5s;
    pointer-events: none;
}

.container .row100 .inputBox input:focus+.text,
.container .row100 .inputBox input:valid+.text {
    top: -35px;
    left: -10px;
}

.container .row100 .inputBox .line {
    position: absolute;
    bottom: 0;
    display: block;
    width: 100%;
    height: 2px;
    background-color: #45f3ff;
    transition: 0.5s;
    border-radius: 2px;
    pointer-events: none;
}

.container .row100 .inputBox input:focus~.line,
.container .row100 .inputBox input:valid~.line {
    height: 100%;
}

.container .row100 .inputBox .textarea {
    position: relative;
    width: 100%;
    height: 100px;
    padding: 10px 0;
}

.container .row100 .inputBox textarea {
    height: 100%;
    resize: none;
    /* background-color: #000; */
}

.container .row100 .inputBox textarea:focus+.text,
.container .row100 .inputBox textarea:valid+.text {
    top: -35px;
    left: -10px;
}

.container .row100 .inputBox textarea:focus~.line,
.container .row100 .inputBox textarea:valid~.line {
    height: 100%;
}

input[type="submit"] {
    border: none;
    padding: 7px 35px;
    cursor: pointer;
    /* outline設置边框样式 */
    outline: none;
    background-color: #45f3ff;
    color: #000;
    font-size: 18px;
    border-radius: 2px;
}

html源码：

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="index.css">
</head>

<body>
    <div class="container">
        <h2>Contact Us</h2>
        <div class="row100">
            <div class="col">
                <div class="inputBox">
                    <input type="text" required="required">
                    <span class="text">First Name</span>
                    <span class="line"></span>
                </div>
            </div>
            <div class="col">
                <div class="inputBox">
                    <input type="text" required="required">
                    <span class="text">Last Name</span>
                    <span class="line"></span>
                </div>
            </div>
        </div>
        <div class="row100">
            <div class="col">
                <div class="inputBox">
                    <input type="text" required="required">
                    <span class="text">Email</span>
                    <span class="line"></span>
                </div>
            </div>
            <div class="col">
                <div class="inputBox">
                    <input type="text" required="required">
                    <span class="text">Mobile</span>
                    <span class="line"></span>
                </div>
            </div>
        </div>
        <div class="row100">
            <div class="col">
                <div class="inputBox textarea">
                    <textarea required="required"></textarea>
                    <span class="text">Type your message Here...</span>
                    <span class="line"></span>
                </div>
            </div>
        </div>
        <div class="row100">
            <div class="col">
                <input type="submit" value="Send">
            </div>
        </div>
    </div>
</body>

</html>

效果展示：

自适应效果:

原文地址：https://www.cnblogs.com/AhuntSun-blog/p/12021798.html

时间： 2024-11-08 16:45:31

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