html {
    position: relative;
    min-height: 100%;
}
body {
    margin: 0 0 100px; /* bottom = footer height */
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover:not(.active) {
    background-color: #111;
}

h3 {
    font-family: "Open Sans", sans-serif;
}

.active {
    background-color: #4CAF50;
}

.header {
    padding-top: 15px;
    font-family: "Open Sans", sans-serif;
    text-align: center;
}

.left-bar{
    float: left;
    position: absolute;
    max-width:25%;
}

.right-bar{
    float: right;
    position: absolute;
    right: 0;
    max-width:25%;
}

.footer {
    position: absolute;
    left: 0;
    bottom: 1px;
    height: 100px;
    width: 100%;
    background-color: #efefef;
    text-align: center;
}



.input {
    text-align: center;
    padding: 5px;
    font-family: "Open Sans", sans-serif;
    width:auto;
}
.output {
    padding: 5px;
    text-align: center;
    font-family: "Open Sans", sans-serif;
    width: auto;
}

.content{
    overflow: hidden;
    padding-left:20%;
    padding-right:20%;
    font-family: "Open Sans", sans-serif;
    line-height: 1.5;
    position: relative;
}

#result{
  padding-bottom: 10px;
}

#instructions{
    color: red;
}

.left-body{
    background: white;
    text-align: left;
    width: 50%;
}

.ad{
    width: 50%;
}

#post{
    margin-left: 13px
}