* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial;
}

.header {
  position: fixed;
  top: 0;
  background-color: #212529;
  border-bottom: solid #454545 1px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 25px;
  transition: 0.3s;
}

.logo a {
  display: block;
  text-decoration: none;
  color: white;
  font-size: 25px;
}

.logo a img {
  height: 50px;
  width: auto;
}

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

.menu {
  display: flex;
  justify-content: center;
  flex-direction: row;
  align-items: center;
  z-index: 1;
  transition 0.5s;
}

.menu li {
  list-style-type: none;
}

.menu li a {
  color: white;
  text-decoration: none;
  display: block;
  padding: 25px 25px;
  font-size: 18px;
  transition: 0.3s;
}

.menu li a:hover {
  box-shadow: 0 -5px 0px #454545 inset;
  background-color: #6b6b6b;
}

.hamburger {
  position: relative;
  width: 30px;
  height: 4px;
  background-color: white;
  border-radius: 10px;
  cursor: pointer;
  z-index: 2;
  transition: 0.3s;
}

.hamburger:before,
.hamburger:after {
  content: "";
  position: absolute;
  height: 4px;
  right: 0;
  background-color: white;
  border-radius: 10px;
  transition: 0.3s;
}

.hamburger:before {
  top: -10px;
  width: 30px;
}

.hamburger:after {
  top: 10px;
  width: 30px;
}

.toggle-menu {
  position: absolute;
  width: 30px;
  height: 30px;
  cursor: pointer;
  z-index: 3;
  opacity: 0;
}

.hamburger,
.toggle-menu {
  display: none;
}

.navigation input:checked ~ .hamburger {
  background: transparent;
}

.navigation input:checked ~ .hamburger:before {
  top: 0;
  transform: rotate(-45deg);
}

.navigation input:checked ~ .hamburger::after {
  top: 0;
  transform: rotate(45deg);
}

.navigation input:checked ~ .menu {
  right: 0;
}

h1
{
  font-family: Arial;
  margin: 0 auto;
}

.arg {
  display:  flex;
}

.logo
{
  height: auto;
  width: 5vw;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, auto); /* 3 IMAGES PER ROW */
  grid-gap: 10px;
  max-width: 1200px;
  margin: 5vw auto;  /* HORIZONTAL CENTER */
}

/* (B) THUMBNAILS */
.gallery img {
  width: 100%;
  height: 200px;
  cursor: pointer;
  /* FILL, CONTAIN, COVER, SCALE-DOWN : USE WHICHEVER YOU LIKE */
  object-fit: cover;
}
.gallery img:fullscreen { object-fit: contain; }

.container  {
  margin: 72px 10px 20px 10px;
  display: flex;
  flex-direction: column;
}

.container .type {
  padding: 40px 0 20px 0;
}

.container .type .title {
  font-size: 24px;
  color: white;
  display: flex;
  justify-content: center;
}

footer {
  padding: 0 20px 20px 20px;
  color: white;
  font-size: 16px;
  display: flex;
  justify-content: center;
}

@media screen and (max-width: 992px) {
  .hamburger,
  .toggle-menu {
    display: block;
  }

  .header {
    padding: 10px 20px;
  }
  .navigation {
    justify-content: flex-start;
  }

  .menu {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    position: fixed;
    top: 0;
    right: -300px;
    height: 100%;
    width: 300px;
    background-color: #212529;
    transition: 0.3s;
  }

  .menu li {
    width: 100%;
  }

  .menu li a {
    padding: 30px;
    font-size: 24px;
  }

  .gallery {
    margin: 10vw;
    grid-template-columns: repeat(2, auto); /* 2 IMAGES PER ROW */
  }

  .container  {
    margin: 72px 0 20px 0;
    display: flex;
    flex-direction: column;
  }
}