header {
  z-index: 2;
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  margin: 0;
  height: 64px;
  background: #F0F0F0;
}

.header-shadow {
  z-index: 1;
  position: fixed;
  top: 0;
  width: 100%;
  height: 64px;
  box-shadow: 0 0 8px #A9A9A9;
}

body {
  margin: 0;
  font-family: "Arial", sans-serif;
  background-color: #000000;
}

.logo {
  margin: 0 32px;
  font-family:sans-serif;
  font-size: 16px;
  color: black;
}

a {
  display: inline-block;
  margin: 0 16px;
  color: black;
  text-decoration: none;  
}

main {
  padding: 0 16px;
  min-height: 200vh;
}


.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 25px;
}

.photo {
  position: relative;
}

.photo img {
  width: 100%;
  height: auto;
  cursor: pointer;
  padding-bottom: 10px;
}

.modal {
  display: none;
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
  margin: auto;
  padding-top: 100px;
  display: block;
  width: 80%;
  max-width: 800px;
  height: auto;
}

.close {
  color: white;
  font-size: 30px;
  font-weight: bold;
  position: absolute;
  top: 20px;
  right: 30px;
  cursor: pointer;
}

a {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    color: #d3d3d3;
}

a:hover, a.active   
{
    text-decoration: none;
    color: #000000;
}