LpageStyle.css

html,
body {
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #fdfdfd;
  background-image: url(img/back5.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.in {
  padding: 20px;
  margin-bottom: 30px;
}

.logo {
  text-align: center;
}

.intro {
  padding-left: 20px;
  color: #000000;
  font-family: "Times New Roman", Times, serif;
  font-size: 40px;
  float: left;
}

.ti {
  color: #000000;
  font-family: "Times New Roman", Times, serif;
  font-size: 70px;
  float: left;
}

.login {
  background-color: #f5f5f5;
  width: 100%;
  max-width: 330px;
  padding: 15px;
  margin: 50px;
  border: 1px solid black;
  border-radius: 15px;
  float: left;
}

.tag {
  float: left;
  padding-top: 10px;
  padding-bottom: 10px;
  width: 100%;
  position: relative;
  border-color: #f5f5f5;
}

.fp {
  width: 100%;
  padding: 15px;
}

.login .checkbox {
  font-weight: 400;
  padding-top: 10px;
}

.login .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
}

.login .form-control:focus {
  z-index: 2;
}

.forget {
  float: left;
  padding-top: 10px;
  padding-bottom: 5px;
  padding-left: 5px;
}

.signup {
  float: left;
  padding: 5px;
}

.cr {
  float: left;
}