body {
  padding-top: 20px;
  padding-bottom: 20px;
}

.navbar {
  margin-bottom: 20px;
}

.footer {
  position: relative;
  bottom: 0;
  width: 100%;
  /* Set the fixed height of the footer here */
  height: 60px;
  background-color: #f5f5f5;
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}