Add new style

main.scss

.navbar {
  background-color: white;
  box-shadow: 0px -9px 20px #000000;

  .nav {
    &-item {
      padding: 0 .5rem;
    }
    &-link {
      padding: 1rem;
      color: #888888;
    }
  }
}

.content {
  padding-top: 10px;
  padding-bottom: 20px;
}

.sidebar {
  border: 1px solid #EFEFEF;
  padding: 20px;
  font-size: 14px;
}

.footer {
  border-top: 1px solid #EFEFEF;
  padding: 10px;
  text-align: center;
  color: #ABABAB;
}