/* Reset style */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: #fafafa;
  list-style: none;
  text-decoration: none;
}


/* Normal header style */
.header_bg {
  background: #323232;
  width: 100%;
  height: 80px;
}

.header_contents {
  width: 100%;
  max-width: 1980px;
  height: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header_contents h1 {
  font-size: 22px;
  margin: 0 0 0 40px;
}

.header_nav_lists {
  display: flex;
}

.header_nav_lists li {
  margin: 0 40px 0 0;
}

.nav_link {
  font-size: 18px;
}

/* Responsive menu button */
.responsive_btn {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin: 0 40px 0 0;
  cursor: pointer;
  position: relative;
  z-index: 10;
}

.menu_line {
  background: #fafafa;
  border-radius: 5px;
  width: 100%;
  height: 5px;
  margin: 4px 0;
}

/* Responsive style */
@media screen and (max-width: 768px) {
  .responsive_btn {
    display: flex;
  }

  .header_bg {
    position: relative;
  }

  .header_nav {
    background: #323232;
    width: 100%;
    height: 100vh;
    padding: 80px 0 0 0;
    position: absolute;
    top: 0;
    right: -100%;
    transition: .5s;
  }

  .header_nav_lists {
    display: block;
    text-align: center;
  }

  .header_nav_lists li {
    margin: 0 0 40px;
    text-align: center;
  }

  .nav_link {
    font-size: 20px;
  }
}

/* js function "menuToggle" starting only */
.menu_active {
  right: 0;
}