body{font-family: Arial, sans-serif; padding:20px; background:#f7f7f7;}
h2{color:#333;}
table{border-collapse: collapse; width: 80%; background:#fff;}
th, td{padding:8px; text-align:left;}
th{background:#eee;}
input, select, button{padding:5px; margin:5px 0;}
button{cursor:pointer;}
.login-container{width:300px; margin:100px auto; padding:20px; background:#fff; border:1px solid #ccc;}
.error{color:red;}