style.css

body {
  background-color: #2c3e50;
  color: #fff;
  font-family: Arial, sans-serif;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #555;
  padding: 20px;
  border-radius: 10px;
  margin-top: 50px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
}

label {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin-bottom: 10px;
}

select,
input[type="number"],
input[type="date"] {
  margin-left: 10px;
  border-radius: 5px;
  border: none;
  padding: 5px;
}

input[type="number"]::placeholder {
  color: #bbb;
}

h1 {
  background-color: #f39c12;
  color: #fff;
  text-align: center;
  padding: 20px;
  border-radius: 10px;
  margin: 0 auto;
  width: 50%;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
}

footer {
  background-color: #555;
  color: #fff;
  text-align: center;
  padding: 10px;
  margin-top: 50px;
}

button[type="submit"] {
  background-color: #f39c12;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  margin-top: 20px;
  cursor: pointer;
  font-weight: bold;
  box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.2);
}

button[type="submit"]:hover {
  background-color: #e67e22;
}

input:focus,
select:focus {
  outline: none;
  box-shadow: 0px 0px 5px rgba(255, 255, 255, 0.5);
}

label[for="amount"], label[for="sold"] {
  font-weight: bold;
  color: #fff;
}

footer {
  font-size: 12px;
  text-transform: uppercase;
}

footer a {
  color: #fff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}