h1  {
    color:#C00000;
    font-size: 25px;
    font-family:Calibri;
    padding: 5px;
    margin-left: auto;
    }
h2  {
    color:#C00000;
    font-size: 20px;
    font-family:Calibri;
    padding: 5px;
    margin-left: auto;
    }
p,li,a{
    font-family:Calibri;
    font-size: 18px;
    width:95%;
    padding: 5px;
    margin-left: auto;
    }

/*use 25% for four, and 50% for two, etc) */
.column1 {
  float: left;
  width: 100%;
  padding: 0px;
    margin-left: auto;
}

.column2 {
  float: left;
  width: 50%;
  padding: 0px;
  margin-left: auto;
}
.column3 {
  float: left;
  width: 33.33%;
  padding: 0px;
  margin-left: auto;
}
.column4 {
  float: left;
  width: 25%;
  padding: 0px;
  margin-left: auto;
}
/* Clear floats after image containers */
.row::after {
  content: "";
  clear: both;
  display: table;
  padding: 5px;
  margin-left: auto;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  padding: 5px;
}

.collapsible {
  background-color: #777;
  color: white;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
  font-family: Roboto, Arial, sans-serif;
}

.active, .collapsible:hover {
  background-color: #555;
}

.content {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
  background-color: #f1f1f1;
  font-size:15px;
  font-family: Roboto, Arial, sans-serif;
}