body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f5f5;
  color: #202122;
  margin: 0;
  padding: 0;
}
header {
  background-color: #ffffff;
  border-bottom: 1px solid #ccc;
  padding: 15px 30px;
}
header h1 {
  margin: 0;
  font-size: 28px;
}
nav {
  width: 200px;
  float: left;
  padding: 20px;
  background-color: #f8f9fa;
  border-right: 1px solid #ccc;
  height: 100vh;
  box-sizing: border-box;
}
nav ul {
  list-style: none;
  padding: 0;
}
nav ul li {
  margin: 10px 0;
}
nav ul li a {
  text-decoration: none;
  color: #3366cc;
}
main {
  margin-left: 220px;
  padding: 20px;
  background-color: #fff;
}
h2 {
  border-bottom: 1px solid #ccc;
  padding-bottom: 5px;
}
.image-box {
  float: right;

  border: 1px solid #ccc;
  padding: 5px;
  background: #fff;
  max-width: 250px;
}
.image-box img {
  width: 100%;
  height: 100px;
}
footer {
  clear: both;
  text-align: center;
  padding: 20px;
  background-color: #f8f9fa;
  border-top: 1px solid #ccc;
}
.title {
  font-size: 24px;
  margin-bottom: 10px;
  background-color: #d4f2ce;
}
.info {
  font-size: 15px;
  margin-bottom: 10px;
  background-color: #d4f2ce;
  text-align: center;
}

a {
  text-decoration: none;
  color: #3366cc;
  font-size: 14px;
  font-weight: bold;
}
a:hover {
  text-decoration: underline;
}
td > a {
  font-size: 14px;

  padding: 1px;
}
td {
  padding: 2px;
  border: 1px solid #ccc;
  text-align: center;
  vertical-align: middle;
}
td > ul > li {
  list-style: none;
  padding: 0;
  margin-left: 2px;
  margin-right: 2px;
  font-size: 12px;
  text-align: left;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background-color: #f8f9fa;
  border-bottom: 1px solid #ccc;
  margin-bottom: 10px;
}
#logo {
  margin-right: 10px;
  margin-top: 5px;
}
#logo img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  position: center;
}
#principal {
  color: black;
  font-size: 20px;
  font-style: italic;
  font-weight: bold;
  text-align: center;
  margin-top: 1px;
}