main.css

@font-face {
  font-family: "NG_sdnl";
  font-weight: normal;
  src: url("https://sanderdijkhuis.nl/type/nittigrotesk-semilight-v20.eot");
  src: url("https://sanderdijkhuis.nl/type/nittigrotesk-semilight-v20.eot?#iefix")
      format("embedded-opentype"),
    url("https://sanderdijkhuis.nl/type/nittigrotesk-semilight-v20.woff")
      format("woff");
}
@font-face {
  font-family: "NG_sdnl";
  font-weight: bold;
  src: url("https://sanderdijkhuis.nl/type/nittigrotesk-medium-v20.eot");
  src: url("https://sanderdijkhuis.nl/type/nittigrotesk-medium-v20.eot?#iefix")
      format("embedded-opentype"),
    url("https://sanderdijkhuis.nl/type/nittigrotesk-medium-v20.woff")
      format("woff");
}

body {
  font-family: NG_sdnl, ui-monospace, system-ui;
  font-size: 18px;
  margin: 12px auto;
  padding: 0 12px;
  background: #fff;
  color: #111;
  font-weight: normal;
  max-width: 40em;
}

body,
textarea {
  line-height: 1.4;
}

a {
  color: inherit;
  text-decoration: underline;
}

h1 {
  font-size: inherit;
  text-align: center;
  font-weight: bold;
  margin: 4em 0 2em 0;
}

pre,
code {
  background: #eee;
  font-family: inherit;
  padding: 0 3px;
  color: #555;
}

code {
  padding: 0 3px;
}

pre {
  padding: 12px;
  background: #fff;
  border: 1px solid #eee;
}

label {
  line-height: 2em;
  display: block;
  margin: 2em -12px;
  color: #555;
  font-weight: bold;
}

output {
  margin-left: 12px;
}

textarea {
  font-size: 100%;
  font-family: ui-monospace;
  font-family: inherit;
  font-weight: normal;
  width: 100%;
  display: block;
  border-width: 1px;
  border-color: #aaa;
  border-left: 0;
  border-right: 0;
  padding: 12px;
  border-radius: 0;
  color: inherit;
  background: #eee;
  box-sizing: border-box;
  height: 120px;
  word-break: break-all;
}

button {
  font-size: 100%;
  font-family: inherit;
  font-weight: bold;
  float: right;
  color: inherit;
  background: #eee;
  border: 0;
  cursor: pointer;
  text-decoration: underline;
  padding: 6px 12px;
}

button:disabled {
  cursor: default;
  color: #aaa;
  text-decoration: none;
}

footer {
  text-align: center;
  font-size: 80%;
  text-transform: uppercase;
  font-weight: bold;
  margin: 2.5em 0;
}

footer * {
  margin: 0 0.5em;
}

footer a {
  text-decoration: none;
}

.licenses {
  white-space: pre-wrap;
  font-size: 80%;
}