透明登录框

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Documenttitle>
    <style>
    body{margin: 0;
      padding: 0;
      font-family: sans-serif;
      background: url(3.jpg);
      background-size: cover;
    }
    .box{position: absolute;
        top: 50%;
        left:50%;
        transform: translate(-50%,-50%); 
        width: 400px;
        padding: 40px;
        background: rgba(0,0,0,.8);
        box-sizing: border-box;
        box-shadow: 0 15px 15px rgba(0,0,0,.5);
        border-radius: 10px;
        
        }
        .box h2
        {
            margin: 0 0 30px;
            padding: 0;
            color: #fff;
            text-align: center;
        }
        .box .inputbox
        {
            position: relative;
        }
        .box .inputbox input{
            width:100%;
            padding: 10px 0;
            font-size: 16px;
            color: red;
            margin-bottom: 30px;
            border: none;
            border-bottom: 1px solid #fff;
            outline: none;
            background: transparent;
            }
        .box .inputbox label{
            position: absolute;
            top: 0;
            left: 0;
            padding: 10px 0;
            font-size: 16px;
            color: #fff;
            pointer-events: none;
            transition: .5s;
        }
        .box .inputbox input:focus ~ label,
        .box .inputbox input:valid ~ label
        {

            top: -18px;
            left: 0;
            color: #00f;
            font-size: 12px;
        }
        .box input[type="submit"]
        {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            background:red;
            padding: 10px 20px;
            cursor: pointer;
            border-radius: 10px;

        }

    style>
head>
<body>
<div class="box">
<h2>loginh2>
<farm>
<div class="inputbox">
<input type="text" name="" required="">
<label>usernamelabel>
div>
<div class="inputbox">
<input type="passwrod" name="" required="">
<label>passwordlabel>
div>
<input type="submit" name="">
farm>
div>
body>
html>

透明登录框_第1张图片

 

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