.site-header {
  background: #3c3c3b;
}
.site-header__logo {
  width: 173px;
  margin-left: 0;
}
.button {
  background: #3c3c3b;
  border-color: #3c3c3b;
}
.button:hover, .button:focus {
  color: #3c3c3b;
  border-color: #3c3c3b;
}