html {
    background: #000000;
    -webkit-font-smoothing: antialiased;
}

body {
    background: #000000;
    color: #ffffff;
    font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier New, monospace, serif;
    font-size: 16px;
    line-height: 1.5;
    margin: 0 auto;
    max-width: 800px;
    padding: 2em 2em 4em;
}

mark {
  background: yellow;
  color: black;
}


::selection {
    background: yellow;
    color: black;

}


h1, h2, h3, h4, h5, h6 {
    color: #ffffff;
    font-weight: 600;
    line-height: 1.3;
}

h2 {
    margin-top: 1.3em;
}

a {
    color: #546e7a;
}

b, strong {
    font-weight: 600;
}

samp {
    display: none;
}

img {
    background: transparent;
    border: 10px solid rgba(0, 0, 0, 0.12);
    align-content: left;
    border-radius: 4px;
    display: block;
    margin: 1.3em auto;
    max-width: 95%;
}