body {
  width: 90%;
  margin: 50px auto;
  font-family: sans-serif;
}
a {
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.center {
  text-align: center;
}
.section {
  padding-left: 30px;
}
#schedule {
  width: 100%;
}
td {
  vertical-align: top;
  padding: 10px;
  border: 1px solid gray;
}