body {
     background: linear-gradient(135deg, #FFFFFF 0%, #F0F0F0 100%);
}

.nav-link {
    margin-right: 100px;
}

footer {
	text-align: center;
}

header > h1 {
   font-size: 40px;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px; 
}
table {
    border-collapse: collapse;
    width: 60%; 
}
th, td {
    border: 1px solid black;
    padding: 8px;
    text-align: center;
}

#pay {
	text-align: center;
}

form {
    border: 2px solid rgb(35, 175, 60);
    padding: 10px; 
    border-radius: 4px; 
	text-align: center;
}