body {
  font-family: Lato, sans-serif;
}
main {
  background: white;
  width: 900px;
  margin: 20px auto;
  padding: 10px 0;
  /*box-shadow: 0 3px 5px rgba(0,0,0,0.3);*/
}
h2 {
  text-align: center;
}
p {
  font-size: 13px;
}
input[id="toggle"]{
  display: none;
  visibility: hidden;
}
input[id="toggle2"]{
  display: none;
  visibility: hidden;
}
input[id="toggle3"]{
  display: none;
  visibility: hidden;
}
label {
  display: block;
  padding: 0.5em;
  text-align: center;
  border-bottom: 0.5px solid black;
  color: black;
}
label:hover {
  color: #000;
}
label::before {
  font-family: Consolas, monaco, monospace;
  font-weight: bold;
  font-size: 15px;
  content: "+";
  vertical-align: text-top;
  display: inline-block;
  width: 20px;
  height: 0px;
  margin-right: 3px;
  background: radial-gradient(ellipse at center, #CCC 50%, transparent 50%);
}
#expand {
  height: 0px;
  overflow: hidden;
  transition: height 0.5s;
  color: black;
}
section {
  padding: 0 20px;
}
#toggle:checked ~ #expand {
  height: 500px;
}
#toggle:checked ~ label::before {
  content: "-";
}

#toggle2:checked ~ #expand {
  height: 500px;
}
#toggle2:checked ~ label::before {
  content: "-";
}

#toggle3:checked ~ #expand {
  height: 500px;
}
#toggle3:checked ~ label::before {
  content: "-";
}

#col {
  -moz-column-count: 2;
  -webkit-column-count: 2;
  column-count: 2;
}
{
    width:100%; 
    margin:0px auto 0px auto;
    position:relative;
}