body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: medium;
  margin: 0px;
}

.header {
  background-color: black;
  color: white;
  font-size: large;
  padding-left: 20px;
  padding-top: 0px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  margin-bottom: 40px;
}

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

th {
  background-color: #f4f4f4;
}

form {
  margin-top: 20px;
}

a{
  text-decoration: none;
}

.dugme {
  display: inline-block;
  padding: 5px 10px;
  margin: 2px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  text-align: center;
  text-decoration: none;
  font-size: 12px;
  cursor: pointer;
}