html, body {
  height: 100%;
  width: 100%;
  font-family: Verdana, sans-serif;
}

@media only screen and (max-width: 400px) {
  input[type=number], select {
    width: 100%;
    box-sizing: border-box;
  }
  .button {
    width: 50%;
  }
}

input[type=number], select {
  padding: 12px 20px;
  margin: 8px 0;
  display: inline-block;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

.button {
  background-color: #350fec;
  color: white;
  padding: 14px 20px;
  margin: 8px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.button:hover {
  background-color: #45a049;
}

#epikefalida{
  background-color: #45a049;
  padding: 10px;
  margin-top: 21px;
}

hr {
  border: 10px solid #45a049;
  border-radius: 5px;
}

table {
  border: 1px solid;
  border-collapse: collapse;
  width: 100%;
}

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

th, td {
  padding: 5px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}
th {
  background-color: #45a049;
  color: white;
}

.copyright{
  padding: 12px 20px;
  margin: 10px;
  display: inline-block;
}