body {
    background-image: url(Background_one.jpg);
}

.logo_container {
    background-color: rgb(245, 245, 245, 0.1);
}

.logo_size {
    border-left: double greenyellow 1em;
    border-right: double greenyellow 1em;
}

.menu {
    border-left: solid greenyellow 0.1em;
    border-right: solid greenyellow 0.1em;
    border-top: solid greenyellow 0.3em;
    border-bottom: solid greenyellow 0.3em;
}

aside ul {
    border-left: solid greenyellow 0.2em;
    border-right: solid greenyellow 0.2em;
}

.back_button {
    background-color: rgb(185, 185, 185);
    list-style: none;
    display: block;
    margin: 4em auto;
    padding: 0.5em 0.5em;
    width: 70%;
    border-top: solid greenyellow 0.5em;
    border-bottom: solid greenyellow 0.5em;
    border-radius: 1em;
    text-align: center;
    font-size: 2em;
    font-weight: bold;
    transition: all 0.5s;
}

.back_button_style {
    color: black;
    text-decoration: none;
    transition: color 0.5s;
}

.back_button:hover {
    transform: scale(1.1);
}

.back_button_style:hover {
    color: blueviolet;                                                         
}

.article_title {
    border-left: solid greenyellow 0.1em;
    border-right: solid greenyellow 0.1em;
    border-top: solid greenyellow 0.3em;
    border-bottom: solid greenyellow 0.3em;
}

.text_container {
    border-left: solid greenyellow 0.2em;
    border-right: solid greenyellow 0.2em;
}

.text_blocks {
    border: solid greenyellow 1em;
}

div h2 {
    border-bottom: solid darkgreen 0.2em;
}

.gallery_title {
    background-color: rgba(185, 185, 185);
    text-align: center;
    font-size: 3em;
    border-bottom: solid green 0.3em;
    border-top: double green 0.5em;
    border-top-left-radius: 1em; 
    border-top-right-radius: 1em;
}

.gallery {
    width: 90%;
    margin:0 auto;
    margin-bottom: 2em;
    display:grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    grid-gap: 20px;
  }

  .gallery-img {
    background-color: black;
    padding: 0.5em;
    margin: 0 auto;
    width: 250px;
    height: 150px;
    cursor: pointer;
    transition: transform 0.2s;
  }

  .gallery-img:hover {
    transform: scale(1.1);
    cursor: zoom-in;
  }

  .image-popup-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
  }

  .close-button {
    position: absolute;
    top: 20px;
    right: 50px;
    font-size:60px;
    color: #fff;
    cursor: pointer;
  }

  .close-button:hover{
    color: red;
  }

  #popupImage {
    display: block;
    max-width: 80%;
    max-height: 80%;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

.footer {
    background-color: rgb(173, 255, 47, 0.8);
}

@media (max-width:600px) {
    .logo_size {
        height: 12em;       
    }

    .gallery{
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        grid-gap: 10px;
    }

    .gallery-img{
        width: 150px;
        height: 150px;
    }
}