body {
  font-size: 120%;
  font-family: Arial;
  height: 1000px;
  background: linear-gradient(200deg, white 40%, red 43%, orange 46%, yellow 49%, blue 52%, purple 55%, white 58%);
}

button, input {
  font-size: 100%;
  font-family: Arial;
}

table {
  width: 100%;
}

td, th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

tr:nth-child(even) {
  background-color: #dddddd;
}

.error {
  color: red;
}

.wrapper {
  margin: 0 auto;
  max-width: 825px;
  text-align: center;
}

.total {
  font-size: 150%;
  text-decoration: underline;
}

.form {
  margin-top: 25px;
  width: 100%;
}

.transactions {
  text-align: left;
  max-height: 300px;
  overflow: auto;
  width: 90%;
  margin: 0 auto;
}

footer {
  position: fixed;
  bottom: 0;
  margin: 0;
  width: 100%;
  height: 60px;
  font-size: 18px;
  margin-top: 20px;
  padding-top: 20px;
  text-align: center;
  background-color: rgba(198, 198, 198, 0.5);
  color: rgba(0, 0, 0, 0.5) 
}