body {
    background-color: #cbd8df;
    color: #141e26;
    line-height: 1.4;
}

#navigation {
  height: 100%;
  width: 30%;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #141e26;
  overflow-x: hidden;
  transition: 0.5s;
  /* padding-left: 20px; */
  padding-top: 60px;
  
  /* margin: 10px; */
}

#content {
    margin-left: 30%;
    margin-right: auto;
    margin-top: 0;
    margin-bottom: 0;
    max-width: 600px;
}

#navigation > ul{
  margin-left: 20px;
  padding: 5px;

}

#navigation ::marker{
    color: #cbd8df;
    content: "▶";

}

#navigation li > ul {
    margin-top: 4px;
    margin-bottom: 4px;
}
#navigation ul {
  /* user-agent styles */
  /* display: block; */
  list-style-type: disc;
  margin-block-start: 1em;
  margin-block-end: 1em;
  padding-inline-start: 8px;
  /* padding: 5px; */
   /* padding-inline-start: 16px; */
  /* list-style-position: inside; */
}

#navigation a {
  /* padding: 8px 8px 8px 32px; */
  text-decoration: none;
  /* font-size: 25px; */
  color: #cbd8df;
  display: block;
  transition: 0.3s;
}

#navigation li {
    padding-top: 5px;
}

#navigation a:hover {
  color: #f1f1f1;
}

#navigation .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: #141e26;
  color: #cbd8df;
  padding: 10px 15px;
  border: none;
}
.demo *{
    margin: 0 auto;
}
.openbtn:hover {
  background-color: #1e5067;
}

#content {
  transition: margin-left .5s;
  padding: 16px;
}

#footer {
  border-top: solid black 1px;
}

#footer a {
    padding: 5px;
}

.navigationBase {
    display: flex;
    margin: 0 auto;
    align-items: center;
     justify-content: center;
}

.navigationBase .navigationBaseEntry {
    display: inline-block;
    padding: 5px;
    border: solid 2px  #141e26;
}

#footer .previous {
  margin-left: 0;
  margin-right: auto;
}


#footer .next {
  margin-right: 0;
  margin-left: auto;
}

#scrollUpButton {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: #141e26;
  color: #cbd8df;
  cursor: pointer;
  padding: 15px;
  border-radius: 4px;
}

#scrollUpButton:hover {
  background-color: #1e5067;
}