html {
  background-color: green;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.content-box {
  background-color: white;
  border: black;
  border-width: 3px;
  margin: 20px;
  padding: 10px;
  width: fit-content;
}

.monster-link {
  position: fixed;
  left: 0;
  top: 0;
  display: inline-block;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.monster-link img {
  display: block;
  width: 102px;
  height: auto;
}