.main_image
{
    max-width: 100%;
    height: auto;
    display: block;
/*    margin: 0px auto; */
}

.author_photo
{
    max-width: 100%;
    height: auto;  
/*    width: 300px; */
/*    border-radius: 10px; */
}

.std_body_text
{
    font-size: 18px;
    color: #000000;
    line-height: 1.2em;
    margin-bottom: 0.8em;
}

.visually-hidden {
  position: absolute;
  left: -9999px;
}


/*

nav {
  opacity: 0;
}


Ak chceme nastaviť obrázok ako pozadie:
body {
    background-image: url("images/foto.jpg");
    background-size: cover;
    background-repeat: no-repeat;
}
*/