body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
}
nav {
  background-color: #ffffff;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin-right: 20px;
}
section {
  padding: 10px;
  max-width: 1280px;
  max-height: 720px;
  margin-left: 20%;
  margin-right: 20%;
}
.sector {
  display: none;
  padding: 10px;
  max-width: 1280px;
  max-height: 720px;
  margin-left: 20%;
  margin-right: 20%;
}
h1 {
  text-align: center;
}
h2 {
  margin-top: 10px;
  margin-bottom: 10px;
}
a{
  color: #000000;
}
.translate {
  background: transparent;
  border: none;
}
.footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: #ffffff;
}
/*------------------------------------------------*/
.gallery img {
  margin: 10px;
  max-width: 200px;
  cursor: pointer;
}
.modal {
  display: none;
  position: fixed;
  z-index: 1;
  padding-top: 100px;
  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: 800px;
}
.modal-content img {
  width: 100%;
}
.close {
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 35px;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
}
.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
  cursor: pointer;
}
/*------------------------------------------------*/
/* The grid: Four equal columns that floats next to each other */
.column {
  float: left;
  width: 25%;
  padding: 10px;
}

.column1 {
  float: left;
  width: 25%;
  padding: 10px;
}

/* Style the images inside the grid */
.column img {
  opacity: 0.8; 
  cursor: pointer; 
}

.column img:hover {
  opacity: 1;
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

/* The expanding image container */
.container {
  max-width: 1280px;
  max-height: 720px;
  margin-left: 20%;
  position: relative;
  display: none;
}

/* Expanding image text */
#imgtext {
  position: absolute;
  bottom: 15px;
  left: 15px;
  color: white;
  font-size: 20px;
}

/* Closable button inside the expanded image */
.closebtn {
  position: absolute;
  top: 10px;
  right: 15px;
  color: white;
  font-size: 35px;
  cursor: pointer;
}
/*------------------------------------------------*/
/* Style the tab */
.tab {
  overflow: hidden;
  background-color: #ffffff;
}

/* Style the buttons inside the tab */
.tab button {
  background-color: inherit;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 14px 16px;
  transition: 0.3s;
  font-size: 17px;
}

/* Change background color of buttons on hover */
.tab button:hover {
  background-color: #a5a5a5;
}

/* Create an active/current tablink class */
.tab button.active {
  background-color: #a5a5a5;
}

/* Style the tab content */
.tabcontent {
  display: none;
  padding: 6px 12px;
}
.space{
  height: 500px;
}
@media screen and (max-width: 768px) {
  .gallery img {
    max-width: 100%;
  }
  .modal-content {
    width: 100%;
  }
  .sector{
    display: block;
    width: 100%;
    margin-left: 0%;
    margin-right: 0%;
  }
  .container{
    margin-left: 0%;
  }
  nav{
    display: none;
    padding: 0px;
  }
  .column{
    width: 100%;
    float: none;
    text-align: center;
  }
  .column1{
    display: none;
  }
  .space{
    height: 150px;
  }
  section{
    display: none;
  }
}