echoip/html/styles.html

<style>
  html,
  .pure-g [class*="pure-u"] {
    background-color: white;
    font-family: "Open Sans", sans-serif;
  }
  pre {
    font-family: "Monaco", "Menlo", "Consolas", "Courier New", monospace;
    white-space: pre-wrap; /* Since CSS 2.1 */
    white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
    white-space: -pre-wrap; /* Opera 4-6 */
    white-space: -o-pre-wrap; /* Opera 7 */
    word-wrap: break-word;
  }
  a {
    /* background: #e3e3e3; */
    text-decoration: underline;
    color: #000;
  }
  a:hover,
  active {
    background: #d7d7d7;
  }
  .ip {
    border: 1px solid #cbcbcb;
    background: #f2f2f2;
    font-size: 36px;
    padding: 6px;
  }
  svg.github-corner {
    fill: #151513;
    color: #fff;
  }
  .footer {
    margin-top: 34px;
    border-top: 1px solid #cbcbcb;
  }

  .content {
    margin-left: auto;
    margin-right: auto;
    padding-left: 1em;
    padding-right: 1em;
    max-width: 1024px;
  }

  .center {
    justify-content: center;
  }

  .info-table td,
  .info-table th {
    padding: 5px;
    border: 2px solid #ababab;
  }

  .info-table th[scope="row"] {
    background-color: #d5d5d5;
    text-align: left;
    white-space: nowrap;
  }

  .widgetbox {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid grey;
    font-family: "Courier New", Courier, monospace;
    margin-top: 0.5rem;
    box-sizing: border-box;
  }

  .widgetbox.input :first-child::before {
    content: "$ ";
    white-space: pre;
  }

  .widgetbox.output {
    min-height: 4em;
    white-space: pre;
    overflow-x: scroll;
  }

  .l-box {
    margin: 0 1rem;
  }

  .align-right {
    text-align: right;
  }

  .narrow-input {
    width: 5.5em;
    height: 1.3em;
    margin-top: 0.2em;
  }

  .medium-input {
    width: 10em;
  }

  button.selected {
    background-color: rgb(208 208 208);
  }

  /* POST CORRECTION */
  .leafcloud-logo .letters {
    fill: black;
  }

  /* DARK MODE OVERRIDES */
  @media (prefers-color-scheme: dark) {
    html,
    .pure-g [class*="pure-u"],
    a {
      background-color: #161719;
      color: #d8d9da;
      /* text-decoration: underline; */
    }
    .ip {
      border: 1px solid #313233;
      background: #212223;
    }
    .footer {
      color: #8e8e8e !important;
      border-top: 1px solid #313233;
    }
    a:hover,
    active {
      background: #3d3e3f;
    }

    svg.github-corner {
      fill: #f8f9fa;
      color: #161719;
    }

    .info-table th[scope="row"] {
      background-color: #2e2e2e;
      color: rgb(220, 220, 220);
      text-align: left;
      white-space: nowrap;
    }

    button {
      background-color: #2e2e2e;
    }
    button.selected {
      background-color: rgb(125 125 125);
    }

    .pure-input {
      background-color: #e6e6e6;
      color: #666;
    }

    .pure-input::placeholder {
      color: #bbb;
    }

    .leafcloud-logo .letters {
      fill: white;
      max-width: 100%;
    }
  }

  @media (min-width: 768px) {
    .leafcloud-placement {
      text-align: right;
    }
    .leafcloud-logo {
      height: 80px;
      margin: 2em 0 -0.5em 0;
    }
  }

  @media (max-width: 768px) {
    .leafcloud-logo {
      margin-right: 1em;
    }
  }

  .debug {
    outline: 1px dotted pink;
  }
</style>