html {
  font-size: 100%;
  line-height: 1.5rem;
  box-sizing: border-box;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  height: 100%;
}
body {
  margin: 0 auto;
  padding: 0;
  min-height: 100vh;
  max-width: 1400px;
  color: lightgray;
}
*,
*::before,
*::after {
  box-sizing: inherit;
}
img {
  height: auto;
  width: 100%;
  display: block;
}
/*nav begain*/
.header-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  line-height: 2rem;
  overflow: hidden;
  margin-bottom: 0.5rem;
  background-color: #fbfbfb;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}
.nav-menu {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  padding: 0;
  margin: 0;
}
.nav-item {
  flex: 1 0 50%;
  text-align: center;
}
.page-title a,
.nav-menu a {
  display: block;
  text-decoration: none;
  letter-spacing: 0.2rem;
  padding: 0.8rem;
  color: grey;
}
.page-title,
.nav-menu {
  text-transform: uppercase;
}
.page-title a {
  font-weight: bold;
  font-size: 2rem;
  color: #dc143c;
}
.page-title {
  margin: 0 auto;
}
.nav-menu a {
  letter-spacing: 0.1rem;
  transition: all ease 0.1s;
}
.nav-menu a:hover {
  color: darkgray;
  transform: none;
  border-bottom: 0.1px solid silver;
  transition: all ease 0.1s;
}
/*Gallery style*/
.gallery-page,
.gallery-page2,
.gallery-page3 {
  padding: 0 1.2rem 10rem 1.2rem;
}
.gallery-container {
  display: grid;
  grid-template-columns: repeat(4, minmax(250px, 1fr));
  grid-auto-rows: 250px;
  grid-gap: 1rem 0.8rem;
  grid-auto-flow: dense;
}
.gallery-item {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.gallery-img {
  height: 100%;
  width: 100%;
  cursor: pointer;
  object-fit: cover;
  object-position: 50% 50%;
  transition: 0.1s ease-in-out;
}
.gallery-item:hover {
  transform: scale(1.02);
}
.w-1 {
  grid-column: span 1;
}
.w-2 {
  grid-column: span 2;
}
.w-3 {
  grid-column: span 3;
}
.w-4 {
  grid-column: span 4;
}
.w-5 {
  grid-column: span 5;
}
.w-6 {
  grid-column: span 6;
}

.h-1 {
  grid-row: span 1;
}
.h-2 {
  grid-row: span 2;
}
.h-3 {
  grid-row: span 3;
}
.h-4 {
  grid-row: span 4;
}
.h-5 {
  grid-row: span 5;
}
.h-6 {
  grid-row: span 6;
}
@media screen and (max-width: 600px) {
  .header-nav {
    line-height: 1.2rem;
  }
  .nav-menu {
    width: 100%;
  }
  .nav-item {
    flex: 1 0 10%;
  }

  .gallery-container {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  .w-1,
  .w-2,
  .w-3,
  .w-4,
  .w-5,
  .w-6 {
    grid-column: span 1;
  }
}