关于css:CSS-每日一练-20210322

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源码

首先把须要居中元素的容器设置高度，而后设置元素的 top、left 属性为 50%，最初应用 transform 拉回元素的 50% 宽高，另外肯定要设置 position 属性为 relative。

html, body, .container{height: 100%;}

.login-wrapper{
  position: relative;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

未去掉轮廓线的文本框的成果如下图

去掉轮廓线的文本框的成果如下图

outline: none;

<input type="text" autocomplete="off" />

<!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">
  <link rel="stylesheet" href="css/style.css">
  <title>Document</title>
</head>
<body>
  <div class="container">
    <div class="login-wrapper">
      <div class="header">Login</div>
      <div class="form-wrapper">
        <input type="text" name="username" placeholder="username" class="input-item" autocomplete="off">
        <input type="password" name="password" placeholder="password" class="input-item" autocomplete="off">
        <div class="btn">Login</div>
      </div>
      <div class="msg">
        Don't have account?<a href="#">Sign up</a>
      </div>
    </div>
  </div>
</body>
</html>

* {
  padding: 0;
  margin: 0;
  font-family: 'Open Sans Light';
  letter-spacing: 0.05em;
}

html,
body {height: 100%;}

.container {
  height: 100%;
  background-image: linear-gradient(to right, #fbc2eb, #a6c1ee);
}

.login-wrapper {
  background-color: #fff;
  width: 250px;
  height: 500px;
  border-radius: 15px;
  padding: 0 50px;
  position: relative;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.login-wrapper .header {
  font-size: 30px;
  font-weight: bold;
  text-align: center;
  line-height: 200px;
}

.login-wrapper .form-wrapper .input-item {
  display: block;
  width: 100%;
  margin-bottom: 20px;
  border: 0;
  padding: 10px;
  border-bottom: 1px solid rgb(128, 125, 125);
  font-size: 15px;
  outline: none;
}

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

.login-wrapper .form-wrapper .btn {
  text-align: center;
  padding: 10px;
  width: 100%;
  margin-top: 40px;
  background-image: linear-gradient(to right, #a6c1ee, #fbc2eb);
  color: #fff;
}

.login-wrapper .msg {
  text-align: center;
  line-height: 80px;
}

.login-wrapper .msg a {
  text-decoration-line: none;
  color: #a6c1ee;
}

bilibili
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正文完