html, body {
  margin: 0;
  padding: 0;

  font-family: Arial, Helvetica, sans-serif;
}

.hidden {
  display: none;
}

.main-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  text-align: center;
}

.main-content h1 {
  width: 100%;
  font-size: 30px;
}

.main-content p {
  width: 100%;
  margin: 0;

  font-size: 12px;
}

.buttons {
  display: flex;
  justify-content: space-around;

  margin: 40px;
}

.buttons input, #confirmBtn {
  width: 200px;
  background-color: #000;
  color: #fff;

  font-weight: 600;

  border: none;
  cursor: pointer;
  transition: 0.2s;
}

.mainBtn {
  background-color: green !important;
}

input {
  padding: 6px;
}

input[type="text"] {
  margin-bottom: 20px;
}

.buttons input:active, #confirmBtn:active {
  transform: scale(0.9);
}

.buttons input:hover, #confirmBtn:hover {
  background-color: #888;
}

table {
  border-collapse: collapse;
}

th, td {
  border: 2px solid #000;
  text-align: center;
  padding: 5px;
}

.tables {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;

  width: 100%;
}

.tables table {
  width: 30%;
}

.maiusc {
  text-transform: uppercase;
}

th.maiusc {
  font-size: 23px;
}

th {
  text-transform: uppercase;
  font-size: 16px;
  background: #000;
  color: white;
}

tr:nth-child(even) {
  background: #f2f2f2;
}

tr:hover {
  background: #dfe9ff;
}