body {
    background-color: black;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.flex-block {
   justify-content: center;
   grid-row-gap: .5em;
   align-items: center;
   position:relative;
   flex-wrap: wrap;
}

.flex-layout {
    margin-top: 10px;
    display: flex;
    flex-direction: row;
}

a {
    text-decoration: none;
    color: white;
}

button {
    background-color: transparent;
    border: 2px solid white;
    color: white;
    padding: .5em 1em;
    cursor: pointer;
    font-family: Arial, Helvetica, sans-serif
}

select {
    font-family: Arial, Helvetica, sans-serif;
}

.flex-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1em;
    justify-items: center;
    align-items: center;
    margin: 25px auto 0;
    max-width: 1200px;
    padding: 0 1em;
}

.flex-grid a img {
    width: 100%;
    height: auto;
    display: block;
    max-width: 100%;
}
    .flex-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1em;
        justify-items: center;
        align-items: center;
        margin: 25px auto 0;
        max-width: 800px;
        padding: 0 1em;
    }

.video-stream-flex {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 25px;
}

iframe {
    display: flex;
    width: 100%;
    margin-top: 0px;
}

.video-description {
   border: 2px dashed white;
   padding: 1em;
   margin-top: 15px;
}

.about-description {
   border: 2px dashed white;
   padding: 1em;
   margin-top: 10px;
   margin-right: 20px;
   margin-left: 20px;
   text-align: center;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

.photo-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 25px; /* Space between images */
    padding: 100px;
    place-items: center; /* Center items in their grid cells */
    justify-content: center;
    max-width: 1400px;
    margin: 0 auto;
}

.photo-item {
    /* prevent flex children from forcing overflow on small screens */
    min-width: 0;
    flex: 0 1 calc(33.333% - 25px);
    max-width: calc(33.333% - 25px);
    box-sizing: border-box;
    border: 2px dashed white;
}

.photo-item img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
}

/* Tablet */
@media (max-width: 900px) {
  .photo-item {
    flex: 0 1 calc(50% - 18px);
    max-width: calc(50% - 18px);
  }
}

/* Mobile */
@media (max-width: 480px) {
  .photo-item {
    flex: 0 1 100%;
    max-width: 100%;
  }
  .photo-grid {
    padding: 12px;
    gap: 12px;
  }

    .flex-grid {
        grid-template-columns: 1fr;
        margin-left: 12px;
        margin-right: 12px;
    }
}

select {
    margin-top: 20px;
    padding: 0.5em;
    background-color: transparent;
    border: 2px solid white;
    color: white;
    cursor: pointer;
}

.hidden {
    display: none;
}

ul {
    list-style: none;
    display: flex;
    gap: 20px;
    padding: 0;
}

.about-images {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin-top: 25px;
    gap: 25px;
}