/* Reset some default styles */
body, h1, h2, h3, h4, h5, h6, p, ul, ol, form, input, button, table, th, td {
  margin: 5px;
  padding: 0;
  box-sizing: border-box;
}

/* Body styling */
body {
  font-family: Arial, sans-serif;
  background-color: #f2f2f2;
  color: #333;
  line-height: 1.6;
}

/* Container */
.container {
  width: 80%;
  margin: 0 auto;
  overflow: hidden;
  padding: 20px;
  background-color: #fff;
}

/* Header */
header {
  background-color: #333;
  color: #fff;
  padding-top: 30px;
  padding-bottom: 10px;
  margin-bottom: 20px;
  margin-left: 10px;
  margin-right: 10px;
}

header h1 {
  text-align: center;
  margin-bottom: 10px;
  margin-left: 10px;
  margin-right: 10px;
}

/* Forms */
form {
  margin-bottom: 0px;
}

form label {
  display: block;
  margin-top: 15px;
  margin-left: 10px;
  margin-right: 10px;
  margin-bottom: 0px;
  font-weight: bold;
}

form input[type="text"],
form input[type="password"],
form input[type="number"],
form input[type="date"],
form select {
  width: 80%;
  max-width: 600px;
  padding: 8px;
  margin: auto 0; 
}

form button {
  margin-top: 15px;
  margin-left: 10px;
  margin-right: 10px;
  padding: 10px 15px;
  background-color: #333;
  color: #fff;
  border: none;
  cursor: pointer;
}

form button:hover {
  background-color: #555;
}

/* Table */
table {
  width: 90%;
  border-collapse: collapse;
  margin-bottom: 20px;
  margin-left: 10px;
  margin-right: 10px;
}

table th,
table td {
  padding: 12px;
  border: 1px solid #ddd;
  text-align: left;
}

table th {
  background-color: #f4f4f4;
}

/* Buttons */
a.button {
  display: inline-block;
  padding: 8px 12px;
  background-color: #333;
  color: #fff;
  text-decoration: none;
  margin-top: 10px;
  margin-left: 10px;
  margin-right: 10px;
}

a.button:hover {
  background-color: #555;
}

/* Footer */
footer {
  text-align: center;
  padding: 10px;
  background-color: #333;
  color: #fff;
  margin-top: 20px;
}

/* Error messages */
.error {
  color: red;
}

table tr:hover {
  background-color: #99c9ff;
}

br {
  padding: 0;
  margin: 0;
}

/* Responsive */
@media (max-width: 600px) {
  .container {
    width: 100%;
  }
}