* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;

  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

#images {
  display: grid;
  grid-template-columns: 50% 50%;
  gap: .5rem;
  width: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  height: 100vh;
  padding: 10px 0 0 0;
  margin: 0;
}

#images>img {
  display: block;
  width: 95%;
  height: 95%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.5s ease;
  border-radius: 1rem;
}

#images>img:hover {
  filter: grayscale(0%);
  cursor: pointer;
}

body {
  height: 100%;
}

#container-lg {
  height: max-height;
  overflow-y: auto;
  position: sticky;
}

ul {
  list-style: none;
}

ul>li {
  padding: 1rem;
  font-size: medium;
  font-weight: bold;
  display: block;
  margin: 10px 10px 10px 0;
  cursor: pointer;
  transition: all 0.5s ease;
  border-radius: 0 10rem 10rem 0;
  text-align: center;
  border: 2px 2px 2px 0 solid transparent;
  color: gray;
}

ul>li:hover {
  background-color: #f6f6f6;
  color: #000000;
}

#container {
  display: flex;
  height: 100vh;
}

li[data-select="x"] {
  background-color: #d7fcff;
  color: black;
}

#co {
  width: 100%;
  padding: 0;
  margin: 0;
  padding: 1rem;
}

a {
  text-decoration: none;
}

header {
  position: sticky;
}

/*
 *
 *ul > li.task-list-item[data-task="x"], ul > li.task-list-item[data-task="X"]
 *
 * */