body {
  background-color: #f2f2f2;
}

main {
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  height: 80vh;
}

/* web */
.item.web .iframe-content {
  width: 345px;
  height: 180px;
}
.item.web .iframe-wrapper {
  height: 600px;
  width: 1150px;
}
/* phone */
.item.phone .iframe-content {
  width: 111px;
  height: 198px;
}
.item.phone .iframe-wrapper {
  height: 660px;
  width: 370px;
}

.iframe-content {
  position: relative;
  opacity: 0.7;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 0 30px rgba(0, 0, 0, .8);
}
.iframe-content .cover {
  z-index: 99;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
.iframe-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: left top;
  transform: scale(0.3);
}
.iframe-wrapper iframe {
  width: 100%;
  height: 100%;
}

.source-code {
  position: relative;
  margin-top: 10px;
  text-align: center;
}

.source-code a {
  display: block;
  color: #000;
  border-radius: 10px;
  background-color: #ccc;
}

.source-code a:hover {
  background-color: rgb(34, 133, 214);
}

footer .footer {
  position: fixed;
  height: 20vh;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

footer .footer a {
  color: #ccc;
}