body, html {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

.background {
  background: url('your-background-image.jpg') no-repeat center center/cover;
  min-height: 100vh;
  transition: filter 0.3s ease;
  position: relative;
}

header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  height: 50px;
}

.login-btn {
  padding: 10px 20px;
  background: green;
  color: white;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

.login-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 999;
}

.login-box {
  background: white;
  padding: 30px;
  border-radius: 10px;
  width: 300px;
  text-align: center;
  position: relative;
}

.login-box input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
}

.login-box button {
  padding: 10px 20px;
  background: teal;
  color: white;
  border: none;
  cursor: pointer;
}

.close {
  position: absolute;
  right: 15px;
  top: 10px;
  font-size: 20px;
  cursor: pointer;
}

/* Blur effect */
.blur {
  filter: blur(5px);
}

 .login-box {
            background: #fff;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 0 10px gray;
            width:300px;
        }
        .login-box h2 {
            margin-bottom: 20px;
            text-align: center;
        }
        .login-box input[type="text"],
        .login-box input[type="password"] {
            width: 100%;
            padding: 8px;
            margin-bottom: 15px;
        }
        .login-box input[type="submit"] {
            width: 100%;
            padding: 10px;
            background: orange;
            border: none;
            color: white;
            font-weight: bold;
            cursor: pointer;
        }
        .error {
            color: red;
            font-size: 0.9em;
            margin-bottom: 10px;
            
            text-align: center;
        }