header {
  display: block;
  max-width: 100%;
  background: transparent;
  z-index: 23;
  width: 100%;
  position: sticky;
  top: 0;
}

header .container {
  padding-top: 10px;
  padding-bottom: 10px;
}

header .header_heading {
  font-size: inherit;
  line-height: 1;
}

header .header_heading a {
  padding: 7.5px;
  display: block;
}

header nav ul {
  list-style-type: none;
}

header nav ul li a {
  font-size: var(--text-nav-font-size);
  font-weight: var(--text-nav-font-weight);
  line-height: var(--text-nav-line-height);
  letter-spacing: var(--text-nav-letter-spacing);
  color: var(--color-primary);
}

header .mobile-menu-toggler {
  display: none;
  outline: none;
  color: rgba(0,0,0,0.5);
  border-color: rgba(0,0,0,0.1);
  text-decoration: none;
  border: medium none;
  line-height: 1;
  background: transparent;
  z-index: 10;
  transition: all 0.5s;
  padding-top: 15px;
  font-size: 20px;
}

header .mobile-menu-toggler.open {
  transform: rotate(-90deg);
  filter: invert(1);
}

header .mobile-menu-toggler span {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  vertical-align: middle;
  transition: all 1s;
  background-repeat: no-repeat;
  background-image: url(../images/menu-burger.png);
  background-size: contain;
}

@media screen and (max-width: 767px) {
  header nav {
    display: none;
  }

  header .mobile-menu-toggler {
    display: block !important;
  }
  

  header .container {
    padding-left: 30px;
    padding-right: 30px;
  }
}