*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 100%;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

html {
  font-size: 16px;
  background-color: black;
}

body {
  font-family: Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  text-align: center;
  word-break: keep-all;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  cursor: pointer;
}


.memo{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  stext-align: center;
  border: none;
}

iframe{
  border: none;
 -webkit-box-shadow:rgb(110,110,110) 2px 2px 2px; ;
}

p{
  font-size: 16px;
  color: black;
  text-align: center;
  word-break: break-all;

}

.뒤로 {
  z-index: 99;
  text-decoration: none;
  position: fixed;
  right: 150px;
  bottom: 290px;
  animation: back 10s infinite alternate;
}