학교수업 웹디

const express = require("express");
const app = express();

app.use(express.static('file'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));

app.get('/', (req, res) => {
  console.log(req.query);
  res.send(`<h1>링크조아</h1>`)
  res.send("성필아 나대지마");
})

app.get('/login', (req, res)=>{
  res.sendFile(__dirname + '/file/login.html');
})

app.post('/welcome', (req, res)=>{
  res.sendFile(__dirname + '/file/welcome.html');
  res.send(`
  <style>
    body > div {
      width: 300px;
      margin: 80px auto;
      position: relative;
    }
    
    div div:first-child {
      margin:0 auto;
      background: blue;
      width: 200px;
      height: 200px;
      -webkit-transition: .5s;
      transition: .5s;
    }
    
    div div:hover {
      background: red;
      -webkit-transform: rotate(360deg);
      transform: rotate(360deg);
      -webkit-transition: background 1s;
      transition: background 1s;
    }
  </style>

  <center><br><h1>${req.body.id}님 어서오세요</h1><br><br><br>
      <div>
        <div></div>
      </div>
  </center>`)
})

app.listen(3000);​
<!
DOCTYPE html> <html lang="ko"> <head> <meta charset="UTF-8"> <title>Document</title> <link rel="stylesheet" href="http://1star-codingblog.m/login.css"> </head> <body> <div class="login-box"> <h2>로그인</h2> <form method = "post" action="/welcome"> <div class="user-box"> <input type="text" name="id" required=""> <label>사용자 이름</label> </div> <div class="user-box"> <input type="password" name="password" required=""> <label>비밀번호</label> </div> <a href="#"> <span></span> <span></span> <span></span> <span></span> <input type="submit"> </a> </form> </div> </body> </html>​
html {
  height: 100%;
}
body {
  margin:0;
  padding:0;
  font-family: sans-serif;
  background: linear-gradient(#141e30, #243b55);
}

.login-box {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  padding: 40px;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,.5);
  box-sizing: border-box;
  box-shadow: 0 15px 25px rgba(0,0,0,.6);
  border-radius: 10px;
}

.login-box h2 {
  margin: 0 0 30px;
  padding: 0;
  color: #fff;
  text-align: center;
}

.login-box .user-box {
  position: relative;
}

.login-box .user-box input {
  width: 100%;
  padding: 10px 0;
  font-size: 16px;
  color: #fff;
  margin-bottom: 30px;
  border: none;
  border-bottom: 1px solid #fff;
  outline: none;
  background: transparent;
}
.login-box .user-box label {
  position: absolute;
  top:0;
  left: 0;
  padding: 10px 0;
  font-size: 16px;
  color: #fff;
  pointer-events: none;
  transition: .5s;
}

.login-box .user-box input:focus ~ label,
.login-box .user-box input:valid ~ label {
  top: -20px;
  left: 0;
  color: #03e9f4;
  font-size: 12px;
}

.login-box form a {
  position: relative;
  display: inline-block;
  padding: 10px 20px;
  color: #03e9f4;
  font-size: 16px;
  text-decoration: none;
  text-transform: uppercase;
  overflow: hidden;
  transition: .5s;
  margin-top: 40px;
  letter-spacing: 4px
}

.login-box a:hover {
  background: #03e9f4;
  color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 5px #03e9f4,
              0 0 25px #03e9f4,
              0 0 50px #03e9f4,
              0 0 100px #03e9f4;
}

.login-box a span {
  position: absolute;
  display: block;
}

.login-box a span:nth-child(1) {
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #03e9f4);
  animation: btn-anim1 1s linear infinite;
}

@keyframes btn-anim1 {
  0% {
    left: -100%;
  }
  50%,100% {
    left: 100%;
  }
}

.login-box a span:nth-child(2) {
  top: -100%;
  right: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, #03e9f4);
  animation: btn-anim2 1s linear infinite;
  animation-delay: .25s
}

@keyframes btn-anim2 {
  0% {
    top: -100%;
  }
  50%,100% {
    top: 100%;
  }
}

.login-box a span:nth-child(3) {
  bottom: 0;
  right: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(270deg, transparent, #03e9f4);
  animation: btn-anim3 1s linear infinite;
  animation-delay: .5s
}

@keyframes btn-anim3 {
  0% {
    right: -100%;
  }
  50%,100% {
    right: 100%;
  }
}

.login-box a span:nth-child(4) {
  bottom: -100%;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(360deg, transparent, #03e9f4);
  animation: btn-anim4 1s linear infinite;
  animation-delay: .75s
}

@keyframes btn-anim4 {
  0% {
    bottom: -100%;
  }
  50%,100% {
    bottom: 100%;
  }
}