.body {
  display: flex;
}

.sidebar {
  width: 50px;
  height: 100vh;
  background: #CCC;
  flex-shrink: 0;
}

.nav__link {
  width: 100%;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid #000;
}

.nav__svg {
  width: 30px;
  height: 30px;
  fill: #000;
}

.nav__link:hover,
.nav__link:focus {
  background: #000;
}

.nav__link:hover .nav__svg,
.nav__link:focus .nav__svg {
  fill: #FFF;
}

.content {
  padding: 30px;
  background: #F5F5F5;
  width: 100%;
}

.facebook__item {
  margin-right: 30px;
}

.facebook-list {
  padding: 0;
  margin: 0;
  list-style: none;
  display: flex;
}

.facebook__svg {
  width: 100px;
  height: 100px;
}

.facebook__link--first .facebook__svg {
  fill: #3B5998;
  color: #FFF;
}

.facebook__link--second .facebook__svg {
  --primary-color: #3B5998;
  --secondary-color: #FFF;
}

.facebook__link--first:hover .facebook__svg,
.facebook__link--first:focus .facebook__svg {
  fill: #FFF;
  color: #3B5998;
}

.facebook__link--second:hover .facebook__svg,
.facebook__link--second:focus .facebook__svg {
  --primary-color: #FFF;
  --secondary-color: #3B5998;
}