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

a:link {color: black; text-decoration: none;}
a:visited {color: black; text-decoration: none;}
a:hover {color: black; text-decoration: none;}
a:active {color: black; text-decoration: none;}

ul { list-style: none; }

img { size: 100%; }

body {
  width: 100%;
  height: auto;
  text-align: center;
  font-family: 'Poppins', sans-serif;
  overflow: auto;
}

.first,
.home,
.secret,
.contact, 
.categories,
.main {
  position: fixed;
}

.first {
  z-index: 77;
  top: 0;
  left: 0;
  width: 100%;
  height: 35px;
  background-color: white;
}

.home { 
  top: 6px;
  left: 2%; 
}

.contact { 
  top: 6px;
  right: 2%; 
}

.secret {
  z-index: 99;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}

.categories {
  z-index: 88;
  top: 35px;
  left: 0;
  width: 100%;
  padding: 5px;
  border-top: 1px solid black;
  border-bottom: 1px solid black;
  background-color: white;
}

.menu {
  margin: 5px;
}

.menu:hover +.secret {
  display: block;
}

.main {
  z-index: 66;
  top: 72px;
  left: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  text-align: left;
  overflow: scroll;
}

.paper {
  position: absolute;
  top: 100px;
  left: 50%;
  transform: translateX(-50%);
  min-width: 500px;
  height: auto;
  text-align: left;
  font-family: 'Noto Serif KR', serif;
  padding: 20px;
  background-image:linear-gradient(180deg, snow, Gainsboro);
  line-height: 2;
}

@media only screen and (min-width: 640px) {
  
}