/*@charset "uft-8";*/
header, nav, aside, main, article, section, footer {
    display: block;
}

/**/
.fullscreen {
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-image: linear-gradient(to bottom right, rgb(196, 196, 196), white);
    color: black;
    z-index: 10;

    text-align: center;
    padding-top: 10%;

    font-family: Arial, Helvetica, sans-serif;
    font-size: 25px;
}
/**/
div.fullscreen > p.title {
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    font-size: 120px;
}

header {
    color: blue;
}

header p {
    display: inline;
    color: red;
}
header p.nuse {
    color: yellowgreen;
}

.collapsible {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
  }
  
  /* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */
  .active, .collapsible:hover {
    background-color: #ccc;
  }
  .collapsible:after {
    content: '\02795'; /* Unicode character for "plus" sign (+) */
    font-size: 13px;
    color: white;
    float: right;
    margin-left: 5px;
  }
  
  .active:after {
    content: "\2796"; /* Unicode character for "minus" sign (-) */
  }

.content {
    padding: 0 18px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
  }