style.css

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

#invoice-container {
  max-width: 800px;
  margin: 20px auto;
  background-color: #fff;
  padding: 20px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#invoice-header {
  text-align: center;
  margin-bottom: 20px;
}

#invoice-logo {
  text-align: right;
  margin-bottom: 10px;
}

#bill-to {
  margin-bottom: 20px;
}

#bill-to p {
  margin: 5px 0;
}

#invoice-details,
#item-table,
#invoice-summary {
  margin-bottom: 20px;
}

#item-table th,
#item-table td {
  padding: 10px;
  border: none;
  text-align: left;
}

#invoice-summary th,
#invoice-summary td {
  padding: 10px;
  text-align: right;
}

#thanks-message {
  text-align: start;
  margin-top: 20px;
}
#invoice-summary {
  display: flex;
  justify-content: end;
  margin-top: 20px;
}
#invoice-summary th {
  padding-right: 100px;
}
#invoice-summary td {
  padding-right: 100px;
}
.invoice-header {
  display: flex;
  flex-direction: row;
}
#invoice-details,
#bill-to,
#invoice-logo {
  width: 33.333%;
}
#item-table table {
  width: 100%;
}
#item-table thead {
  width: 25%;
  background-color: whitesmoke;
}
#item-table th {
  padding: 10px;
  border-bottom: 1px solid black;
}

#invoice-summary tr:first-child td {
  border-top: 1px solid #000;
}
#invoice-summary th {
  border-top: 1px solid #000;
}