:root {
  --codeFont: 'Roboto Mono', monospace;
  --shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

body {
  font-family: Verdana, san-serif;
  max-width: 750px;
  margin:  auto;
  line-height: 1.5rem;
  padding: 0 1rem 2rem 1rem;
}

li {
  margin: 0.1rem;
}

h1 {
  text-align: center;
}

figure {
  width: 300px;
  float: right;
  padding: 0.5rem;
  margin: 0 0 2rem 2rem;
  box-shadow: var(--shadow);
}

figcaption {
  font-size: 0.7rem;
  margin-top: 0.25rem;
  font-style: italic;
  line-height: 1rem;
  text-align: right;
  vertical-align: middle;
}

img {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
}

.code {
  font-family: var(--codeFont);
  font-size: 1rem;
  white-space: pre;
}

div.code-block {
  border: 2px solid lightgray;
  padding: 1rem;
  overflow: clip;
  background-color: floralwhite;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

#user-code {
  display: flex;
  align-items: flex-start;
  margin: 1.5rem 1.5rem;
}

textarea {
  border: 2px solid gray;
  resize: none;
  overflow: hidden;
  box-sizing: border-box;
}

#user-code * {
  padding: 0 1rem;
}

#ucode {
  flex-grow: 1;
}

div.analysis {
  display: flex;
  flex-wrap: wrap;
  padding: 1rem;
  margin: 0 auto;
  justify-content: space-between;
  background-color: floralwhite;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

#error {
  visibility: hidden;
  background-color: lightpink;
  color: red;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  padding: 0.6rem;
  position: relative;
  margin: -1rem 0;
  z-index: 1;
}

#canonical-years {
  font-family: var(--codeFont);
  margin-top: 2rem;
}

div.year {
  display: flex;
}

div.year div:first-child {
  border: 0;
  font-weight: bold;
}

div.year div {
  border: 2px solid black;
  margin-left: -2px;
  margin-top: -2px;
  flex-basis: 0;
  flex-grow: 1;
  text-align: center;
}

.heading {
  font-weight: bold;
  background-color: floralwhite;
}

.right {
  background-color: lightgreen;
}

.wrong {
  background-color: pink;
}

#boast {
  font-style: italic;
  font-weight: bold;
  margin: 1rem auto;
  padding: 0 4rem;
  text-align: center;
}

.twitter-share-button {
  margin: 1rem;
  display: inline-block;
  width: 40px;
  height: 40px;
  background-image: url("../images/twitter.svg");
  background-repeat: no-repeat;
  background-postion: center;
}

@media screen and (max-width: 600px) {
  figure {
    float: none;
    margin: 0 auto;
  }

  textarea {
    height: 5rem;
  }

  #canonical-years {
    font-size: 0.75rem;
  }
}