.container { 
    padding: 20px; 
}

.card { 
    margin-bottom: 20px; 
}

.nav-tabs { 
    margin-bottom: 20px; 
}

.form-group { 
    margin-bottom: 15px; 
}

.table-responsive { 
    margin-top: 20px; 
}

.status-available { 
    color: green; 
}

.status-full { 
    color: red; 
}

#loginForm { 
    max-width: 400px; 
    margin: 100px auto; 
}

#mainContent { 
    display: none; 
}

.user-info { 
    float: right; 
    margin: 10px; 
}