header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--primary);
}

header.initial {
  background: #fff;
  box-shadow: 0 1px 5px 0 rgba(0,0,0,0.07),0 1px 0 0 rgba(0,0,0,0.03);
}

header > div {
  display: flex;
  justify-content: space-between;
}

header .logo img {
  margin: 10px 0;
  height: 50px;
}


header .menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  list-style: none;
}

header .menu a {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  height: 100%;
  font-weight: bold;
  text-decoration: none;
  color: #fff;
  letter-spacing: 1px;
  font-size: 1.3rem;
  overflow: hidden;
}

header.initial .menu a {
  color: var(--primary);
}

header .menu a.selected {
  color: var(--secondary);
}

header.initial .menu a.selected {
  color: var(--plus);
}


/* Responsive Menu */

header .responsive-menu {
  pointer-events: none;
  position: absolute;
  width: 100%;
  background: var(--primary);
  transition: 0.5s;
  z-index: -1;
  opacity: 0;
}

header .responsive-menu.open {
  opacity: 1;
  pointer-events: initial;
}

header .responsive-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  width: 100%;
}

header .responsive-menu a {
  color: #fff;
  text-decoration: none;
}

header .responsive-menu li {
  width: 100%;
  padding: 10px 20px;
}

header .responsive-menu a.selected li {
  background: var(--plus);
}

/* Menu button animation */

header .menu_btn {
  position: relative;
  display: none;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  height: 30px;
  transition: all .5s ease-in-out;
}

header.initial .menu_btn > div {
  background: var(--primary);
}

header .menu_btn > div {
  width: 35px;
  height: 2px;
  background: #fff;
  border-radius: 5px;
  transition: all .5s ease-in-out;
}

header.initial .menu_btn > div::after,
header.initial .menu_btn > div::before {
  background: var(--primary);
}

header .menu_btn > div::after,
header .menu_btn > div::before {
  content: '';
  position: absolute;
  width: 35px;
  height: 2px;
  background: #fff;
  border-radius: 5px;
  transition: all .5s ease-in-out;
}


header .menu_btn > div::before {
  transform: translateY(-10px);
}

header .menu_btn > div::after {
  transform: translateY(10px);
}

header .menu_btn.open > div {
  transform: translateX(-50px);
  background: transparent;
}

header .menu_btn.open > div::before {
  transform: rotate(45deg) translate(35px, -35px);
}

header .menu_btn.open > div::after {
  transform: rotate(-45deg) translate(35px, 35px);
}

@media (max-width: 950px) {
  header .menu_btn {
    display: flex;
  }

  header .menu {
    display: none;
  }

  header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  header .logo img {
    margin: 17px 0 10px 0;
  }

}