body {
  background-color: white;
  color: black;
  font-family: arial;
  margin-top: 2%;
  margin-bottom: 20%;
  margin-right: 30%;
  margin-left: 30%;

}

mark {
  background-color:white;
}

mark:hover {
  background-color:hotpink;
  color:white;
}

@media (max-width: 1000px) {
    body {
        margin-top:2%;
        margin-bottom:6%;
        margin-right:6%;
        margin-left:6%;
    }
}

h1:hover {
  color:hotpink;
}

h2 {
  color:hotpink;
}

a {
  color:hotpink;
  text-decoration:none;
}

a:hover {
  color: black;
  background-color: hotpink;

}

.collapsible {
  background-color: #eee;
  color: black;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;

}

.collapsible:hover {
  background-color: hotpink;
  color:white;
    transition: .3s ease-in-out;

}

/* style collapsible */
.content {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-in-out; 
  background-color: #f1f1f1;
  font-size:95%;

}

#wip {
  color:yellow;
  text-decoration: underline;
}

footer {
    left: 0;
  bottom: 0;
  padding:10px;
  width: 100%;
 position:fixed;
 text-align: center;
 background-color: lightpink;
}

#footer {
  color:black;
}

#footer:hover {
  color:white;
}