.md-header--shadow {
  box-shadow: none;
}

.md-header {
  height: 100px;
  background-color: black;
  background-image: url("first-cc.jpg");
  background-size: cover;
}

.md-header__button.md-logo {
  margin: 0;
  padding: 0;
}

.md-header__button.md-logo img, .md-header__button.md-logo svg {
  height: 100px;
}