html, body {
  overflow-x: hidden;
  overflow-y: hidden;
}
body {
  position: relative;
  margin: 0;
  font-family: monospace;
  font-size: 16px;
  font-weight: normal;
  color: #373737;
  background-color: #efefef;
}
a {
  color: #373737;
  text-decoration: underline;
}
a:hover, a:focus {
  color: #c23127;
  border-bottom-color: #c23127;
  outline: none;
}
ul {
  list-style-type: none;
}
.card {
  z-index: 2;
  display: inline-block;
  background-color: white;
  border-style: solid;
  border-width: thin;
  border-color: #373737;
}
.card__contents {
  margin: 1em;
}
img {
  max-width: 100%;
  height: auto;
}
.social-icon {
  width: 2vw;
}
.json {
  user-select: none;
}
.json__content {
  padding: 0;
  margin: 0 0 0 1em;
}
.json__item {
  margin: 0.5em 0 0.5em 0;
}
.json__array {
  display: flex;
  flex-direction: row;
  align-items: center;
}
section {
  height: 100vh;
  background-color: #efefef;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
#gravity-canvas {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}