* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 14px;
  background-color: rgb(226, 218, 218);
}

header {
  background-color: darkslategrey;
  padding: 14px;
  margin-bottom: 14px;
}

header h1 {
  color: white;
  text-align: center;
}

section {
  background-color: white;
  padding: 12px;
  margin-bottom: 14px;
}

.sobre {
  text-align: center;
}

thead th {
  background-color: rgb(226, 218, 218);
  text-align: left;
  font-weight: normal;
  padding: 8px;
  border: 1px solid #d4c4c4;
}

tbody td {
  padding: 8px;
  border: 1px solid #d4c4c4;
}

label,
input,
select,
textarea {
  display: block;
  width: 100%;
  background-color: white;
}

input,
select,
textarea {
  padding: 4px;
  margin-bottom: 8px;
  border: 1px solid #d4c4c4;
}

button {
  background-color: darkslategrey;
  color: white;
  padding: 8px;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #333;
}

footer {
  background-color: darkslategrey;
  padding: 14px;
  text-align: center;
  color: white;
}

footer a {
  color: white;
}