html, body {
  height: 100%;
  width: 100%;
}

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

input[type=text], select {
  width: 74.5%;
  padding: 12px 20px;
  margin: 8px 0;
  display: inline-block;
  border: 1px solid #ccc;
  font-family: Arial, Helvetica, sans-serif;
  border-radius: 4px;
  box-sizing: border-box;
}
input[type=number], select {
  width: 12.37%;
  padding: 12px 20px;
  margin: 8px 0;
  font-family: Arial, Helvetica, sans-serif;
  display: inline-block;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

input[type=submit] {
  width: 49.81%;
  background-color: #4CAF50;
  color: white;
  padding: 14px 20px;
  margin: 8px 0;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

input[type=submit]:hover {
  background-color: #45a049;
}

div {
  border-radius: 5px;
  background-color: #f2f2f2;
  padding: 20px;
  font-size: 20px;
}

table {
  border-collapse: collapse;
}

td, th {
  border: 1px solid #000;
  padding: 10px;
}

#myTable {
  font-family: Arial, Helvetica, sans-serif;
  border-collapse: collapse;
  width: 100%;
}

#myTable td, #myTable th {
  border: 1px solid #ddd;
  padding: 8px;
}

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

#myTable tr:hover {background-color: #ddd;}

#myTable th {
  padding-top: 12px;
  padding-bottom: 12px;
  text-align: left;
  background-color: #3fb7de;
  color: white;
}

.loader {
  border: 5px solid #f3f3f3; /* Light grey */
  border-top: 5px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 1px;
  height: 1px;
  animation: spin 2s linear infinite;
  display: none;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}