styles.css

body, html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 13px;
  line-height: 1.5;
  color: #333;
  background-color: #fff;
  padding: 0;
  margin: 0;
  min-width: 650px;
  overflow-y: scroll;
}

.container {
  padding: 15px;
  overflow: auto;
}

.container--no-padding-top {
  padding-top: 0;
}

header {
  background-color: #31373d;
}

h3 {
  color: #ffffff;
  margin: 5px 0;
}

.p--large {
  font-size: 16px;
}

.message {
  border: 2px dashed #dddddd;
  padding: 10px;
  overflow: scroll;
  word-break: break-all;
}

.copied {
  opacity: 0;
}

.copied--is-visible {
  opacity: 1;
}

.btn {
  outline: none;
  padding: 8px 20px;
  background-color: #96bf48;
  border: 1px solid #96bf48;
  color: #ffffff;
  font-size: 14px;
  border-radius: 3px;
  width: 100%;
}

.btn:hover {
  background-color: #7ba232;
  border: 1px solid #7ba232;
  cursor: pointer;
}

.error-link {
  color: #96bf48;
}

.center {
  text-align: center;
}

#container-error,
#container-success {
  display: none;
}

.show {
  display: block !important;
}