popup.css

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: sans-serif;
  color: #0c0a0a;
}

html {
  width: 350px;
}

body {
  background-color: #f8f8ff;
  scrollbar-width: thin;
}

nav {
  display: flex;
  position: fixed;
  top: 0;
  justify-content: start;
  align-items: center;
  width: 100%;
  background-color: #ffffff;
  border-radius: 5px;
}

nav img {
  width: 42px;
  margin-left: 12px;
  background-color: #f8f8ff;
}

#loader {
  margin: 50px 20px 50px 4px;
  padding: 4px;
}

.cover-img,
.title,
.author {
  margin: 8px;
  padding: 4px;
  border-radius: 5px;
}

.cover-img {
  width: 100%;
  height: 200px;
  margin-bottom: 2px;
}

.title,
.author {
  height: 10px;
  background: #777;
}

.author {
  width: 50%;
}

.animate {
  animation: shimmer 2s infinite;
  background: linear-gradient(to right, #f8f8ff 4%, #eeeeee 25%, #f8f8ff 36%);
  background-size: 1000px 100%;
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

ul {
  margin: 50px 0;
  padding: 2px;
  list-style-type: none;
}

li {
  margin: 8px;
  padding: 4px;
}

li img {
  width: 100%;
  height: 200px;
  margin-bottom: 2px;
  border-radius: 5px;
}

li h2 {
  font-weight: 400;
  font-size: 16px;
  color: #424242;
}

li h3 {
  font-weight: 300;
  color: #adb5bd;
  font-size: 12px;
}

li a {
  text-decoration: none;
}

li a:hover {
  cursor: pointer;
}

footer {
  width: 100%;
  position: fixed;
  bottom: 0;
  padding: 4px 2px;
  background-color: #ffffff;
}

footer h3 {
  padding: 4px 2px;
  text-align: center;
  font-weight: 400;
}