main.css

:root {
  --color-text: #2a2e32;
}

* {
  font-family: 'Courier New', Courier, monospace;
}

body {
  margin: 0;
  padding: 0;
}

.art-page-header {
  position: absolute;
  top: 0;
  left: 0;
  padding-right: 30px;
  padding-left: 30px;
  z-index: 5;
}

.app-text-link {
  padding-top: 8px;
  padding-bottom: 8px;
  display: inline-block;
  color: var(--color-text);
  text-decoration: none;
}

.app-text-link>span {
  border-bottom: 1px solid var(--color-text);
  transition-property: border;
  transition-duration: 0.4s;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);

}

.app-text-link:hover>span {
  border-bottom: 1px solid transparent;
  text-decoration: none;
}