body {
    margin: 0;
    font-family: "Rubik", sans-serif;
    
  }


  /* SIDEBAR */
  .sidebar {
    margin: 0;
    padding: 0;
    width: 150px;
    background-color: #f1f1f1;
    position: fixed;
    height: 100%;
    overflow: auto;
    
  }
  
  .sidebar a {
    display: block;
    color: black;
    padding: 10px;
    text-decoration: none;
    
  }
   
  .sidebar div{
    padding: 5px 5px 5px 50px;
    
  }

  .sidebar a.active {
    background-color: #030005;
    color: white;
    
  }
  
  .sidebar a:hover:not(.active) {
    background-color: rgb(206, 206, 206);
    color: white;
    transition: 0.3s;
    
  }


  div.content {
    margin-left: 200px;
    padding: 1px 16px;

  }

  img.back{
    position: absolute;
    bottom: 0px;
    right: 0px;
    z-index: -10;
  }

  /* MEDIA */
  @media screen and (max-width: 700px) {
    .sidebar {
      width: 100%;
      height: auto;
      position: relative;
    }
    .sidebar a {float: left;}
    div.content {margin-left: 0;}
  }
  
  @media screen and (max-width: 400px) {
    .sidebar a {
      text-align: center;
      float: none;
    }
} 


/* DIVY pro zobrazeni obrazku */
* {
    box-sizing: border-box;
  }

.row {
    display: -ms-flexbox; /* IE 10 */
    display: none;
    -ms-flex-wrap: wrap; /* IE 10 */
    flex-wrap: wrap;
    padding: 0 4px;
  }

  .column {
    -ms-flex: 25%; /* IE 10 */
    flex: 25%;
    padding: 0 4px;
  }
 
  .column img {
    margin-top: 8px;
    vertical-align: middle;
  }

/* MODAL */

  .bottomtext {
    color: #ccc;
    padding-top: 40px;
    text-align: center;
    font-size: 36px;
  }

  .thumb {
    border-radius: 5px;
    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);
    }

    .modalImage {
    margin: auto;
    display: block;
    max-width: 1200px;
    }

    #caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
    }
    .close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    }
    .close:hover,
    .close:focus {
    color: rgb(255, 0, 0);
    cursor: pointer;
    }  


    /* Masonry */
    
    .grid {
      max-width: 3200px;
    }
    .grid-item { 
      width: 400px; 
      
    }

    .grid-item img {
      vertical-align: middle;
      padding: 10px 10px 10px 10px;
    }

    .grid-item--width2 { width: 400px; }