body {
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: rgba(73, 107, 219, 0.598);;
    color: white;
}

header img {
    vertical-align: middle;
    margin-right: 10px;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    grid-gap: 20px;
    max-width: 800px;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.gallery-item {
    overflow: hidden;
    position: relative;
    background-color: #eaeaea;
    border: 2px solid #1d546c;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.image-caption {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    padding: 5px 10px;
    font-size: 14px;
    border-radius: 3px;
}

 footer {
  padding-top: 5px;
  background-color: rgba(73, 107, 219, 0.598);
  color: black;
  font-size: small;
  text-align: center;
  line-height: 1.5;
  position: relative;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
  padding: 10px;
}

.footer-gato {
  position: absolute;
  left: 10px;
  top: 10px;
  height: 80px;
}

.firma {
  font-style: italic;
  font-size: large;
  margin-top: 10px;
}

/* Estilos para el modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0, 0, 0);
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

.download-btn {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    background-color:  rgba(73, 107, 219, 0.598);;#4CAF50;
    color: white;
    text-align: center;
    text-decoration: none;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
}