mathb.css

body {
  color: #333;
  font-family: georgia, serif;
  line-height: 1.5;
  margin: 0 auto;
  padding: 0 1em;
}
a:link {
  color: #00e;
}
a:visited {
  color: #518;
}
a:focus, a:hover {
  color: #03f;
}
a:active {
  color: #e00;
}
header h1 {
  text-align: center;
  margin: 0.5em 0;
}
header h1 a:link, header h1 a:visited {
  color: #333;
  text-decoration: none;
}
header h1 a:focus, header h1 a:hover {
  color: #555;
  text-decoration: underline;
}
header nav {
  display: none;
}
footer hr {
  border: none;
  border-bottom: thin dotted #666;
  margin: 1em 0;
}
form {
  background: #eee;
  border: thin solid #ccc;
  padding: 1em;
}
textarea {
  box-sizing: border-box;
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 0.5rem;
  min-height: 10rem;
}
#view {
  box-sizing: border-box;
  min-height: calc(100vh - 38em);
}
input {
  box-sizing: border-box;
  display: block;
  width: 100%;
  padding: 0.5rem;
  margin-top: 1rem;
}
#submit, #copy {
  box-sizing: border-box;
  display: block;
  width: 50%;
  margin-left: auto;
  margin-right: auto;
}
#output {
  margin-top: 1em;
}
#sheet {
  border: thin solid #999;
  overflow: auto;
}
#output {
  box-sizing: border-box;
}
#copy {
  width: 25%;
}
footer div {
  max-width: 40em;
  margin-left: auto;
  margin-right: auto;
}
footer nav, footer nav + p {
  text-align: center;
}
footer nav a {
  line-height: 2.5em;
}
header nav a, footer nav a {
  margin-right: 2em;
}
header nav a:last-child, footer nav a:last-child {
  margin-right: 0;
}
#view {
  padding: 1em;
}
#date {
  font-size: small;
  color: #666;
  line-height: 1.5rem;
  text-align: right;
  padding: 0 1rem;
}
noscript, #error {
  font-size: large;
  color: #f00;
  border-color: #f00;
}
#error {
  margin-bottom: 1em;
}
#widget {
  display: none;
}
.post #widget {
  display: block;
}
.notice {
  border: thick double #f00;
}
@media screen and (min-width: 50em) {
  header h1 {
    display: inline-block;
    width: 50%;
    text-align: left;
  }
  header nav {
    display: inline-block;
    width: 50%;
    text-align: right;
  }
  form, #output {
    display: inline-block;
    box-sizing: border-box;
    width: calc(50% - 0.5em);
    vertical-align: top;
  }
  textarea {
    min-height: calc(100vh - 19rem);
  }
  #output {
    margin-left: 1em;
    margin-top: 0em;
  }
  #url {
    display: inline-block;
    width: 75%;
  }
  #copy {
    display: inline-block;
    margin-left: 1em;
    width: calc(25% - 1em);
  }
  #view {
    min-height: calc(100vh - 12em);
  }
}
@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #bbb;
  }
  a:link {
    color: #9bf;
  }
  a:visited {
    color: #caf;
  }
  a:focus, a:hover {
    color: #9cf;
  }
  a:active {
    color: #faa;
  }
  header h1 a:link, header h1 a:visited {
    color: #bbb;
  }
  header h1 a:focus, header h1 a:hover {
    color: #ddd;
  }
  form {
    background: #222;
  }
  input, textarea, button {
    background: #000;
    color: #bbb;
  }
  form, input, textarea, button, #output {
    border-color: #666;
  }
  noscript, #error {
    color: #f99;
    border-color: #f99;
  }
  .notice {
    font-size: large;
    border-color: #f99;
    margin-bottom: 1em;
    padding: 0 1em;
  }
  .notice p {
    max-width: 40em;
    margin-left: auto;
    margin-right: auto;
  }
}
@media print {
  header, form, footer, #date, .post #widget, .notice {
    display: none;
  }
  #sheet {
    border: 0;
  }
}