body {
    margin:0;
    font-family: Arial;
    background:#111;
    color:white;
}
.navbar {
    display:flex;
    justify-content:space-between;
    padding:15px;
    background:#222;
}
.container {
    width:80%;
    margin:auto;
}
.card {
    background:#333;
    padding:20px;
    margin-top:20px;
}
table {
    width:100%;
}