*{
 margin : 0;
 padding: 0;
 box-sizing: border-box;
}

body {
    font-family: monospace;
    background-color: royalblue;
    word-break: keep-all;
}

.nav {
    position: absolute;
    height: 100%;
    width: 300px;
    border-right: 1px solid white;
}

ol {
    padding: 20px;
    margin-left: 20px;
}

.post {
    position: absolute;
    height: 100%;
    width: calc(100% - 300px);
    margin-left: 300px;
    padding: 20px;
}

.content {
    display: none;
    height: 100%;
  /*  overflow-y:auto;*/
}

.content:target {
    display: block;
}

a {
    color: white;
    word-break: break-all;
    cursor: pointer;
}


span {
    position: absolute;
    top: 0;
    left: 0;
}

iframe {
  width: 100%;
  height: 100%;
  background-color: white;
}

mark {
    background-color: white;
}

@media screen and (max-width: 704px) {
  .nav {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
  }
  .post {
    display: none;  
  }

  ol {               
    padding: 12px;
  }

}