@keyframes slideInTop200 {  
  from {  
    transform: translateY(-100%);
  }  

  to { }  
}

a {
  color:yellow;
  transition: 250ms;
  text-decoration: none;
}

a:hover {
  color:red;
  filter: none;
}

span.tangent {
  opacity: 0.25;
}

button {
  font-size: 20px;
  color:yellow;
  font-family: arame_regular;
  background-color: black;
  padding: 4px;
  border: 2px solid white;
  transition: 250ms;
}

button:hover {
  background-color: white;
  color:black;
}

@media (prefers-color-scheme: light) {
  button:hover {
    background-color: black;
    color:white;
  }
}

ul {
  margin-top: 10px;
  margin-bottom: 10px;
  padding-inline: 20px;
}

/* nested lists */
ul li, li ul {
  margin-top: 0;
  margin-bottom: 0;
}

.header {
  height: 60px;
  backdrop-filter: invert(1);
  padding-top: 10px;
  padding-left: 40px;
  line-height: 20px;
  flex-direction: row;
  display: flex;
  color: var(--background-gradient-b);
}

.header h1 {
  margin: 20px;
  font-family: stratum2;
}

.header a {
  background-color: rgba(0,0,0, 0.5);
}

@media (prefers-color-scheme: light) {
  .header a {
    background-color: rgba(255, 255, 255, 0.5);
  }
}