* {
  box-sizing: border-box;
}

body {
  background-color: #0c1222;
  color: #fff;
  font-family: "Segoe UI";
}

.files {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 1;
}

.files > a {
  display: block;
  width: 100px;
  height: 120px;
  text-align: center;
}

.files > a:hover {
  background-color: rgba(200, 200, 200, .6);
}

.files > a > img {
  display: block;
  width: 60px;
  height: 60px;
  margin: 20px;
}

.files > a > span {
  display: block;
  line-height: 20px;
  width: 100%;
  text-align: center;
  color: #fff;
  text-decoration: underline;
  text-decoration-color: #fff;
}

.desktop {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  min-width: 600px;
}

.desktop > div {
  position: absolute;
}

.window-bar {
  width: 100%;
  height: 30px;
  padding-left: 10px;
  background-color: #000;
  line-height: 30px;
}

.window-bar > button {
  position: relative;
  float: right;
  width: 40px;
  height: 100%;
  background-color: transparent;
  border: none;
  color: #fff;
}

.window-bar > button:hover {
  background-color: #f44;
}

.window-content {
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: calc(100% - 30px);
  background-color: #111;
}

#window-portrait {
  top: 50px;
  left: 200px;
}

#window-about {
  top: 400px;
  left: 150px;
  width: 420px;
}

#window-about > .window-content {
  padding: 0 20px;
  overflow: auto; /* prevent margin collapsing */
}

@media (min-width: 992px) { /* large device layout */
  #window-portrait {
    top: 100px;
    left: 200px;
  }

  #window-about {
    top: 200px;
    left: 500px;
    width: 450px;
  }
}