style.css

body{
    margin:0;
    padding:0;
    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
}
.nav{
    list-style: none;
    padding: 10px;
    line-height: 40px;
    border: none;
    background-color: #acd6af;
    margin: 0;
    text-align: center;
}
.nav li{
    display: inline;
    padding-right: 12px;
    padding-left: 12px;
    color: #333;
    font-size: 15px;
    text-transform: uppercase;
}
.nav li a{
    text-decoration: none;
    color: #333;
}
a {
    color: #008CBA;
    text-decoration: none;
    font-weight: 500;
}
a:hover{
    text-decoration: underline;
}
.container, p {
    font-size: 17px;
    line-height: 1.7em;
    margin-top: 20px;
    margin-bottom: 20px;
    color: #4D4D4D;
    font-family: 'Roboto', sans-serif;
    font-weight: 100;
}

.container {
    max-width: 700px;
    margin-left: calc(50vw - 350px);
}

@media screen and (max-width: 710px) {
    .container {
      margin-left: 10px;
    }
}
h1{
    font-family: "Oswald", Helvetica, Arial, sans-serif;
    font-weight: 200;
}
h2{
    font-family: "Raleway", Helvetica, Arial, sans-serif;
    margin: 60px 0 20px 0;
    border-bottom: 1px solid #B2B2B2;
}
.column > h3{
    font-family: "Raleway", Helvetica, Arial, sans-serif;
    text-align: center;
}
.column > p{
    margin: 0 20px;
}
hr{
    margin: 0 0 30px 0;
    border-top: 1px solid #B2B2B2;
    border-bottom: none;
    border-left: none;
    border-right: none;
}
p{
    text-align: justify;
}
.columns {
    display: flex;
    align-items: center;
}
.column {
  float: left;
  width: 50%;
}
ul.icons{
    list-style-type: none;
    line-height: 2.4em;
}
ul.icons li i{
    margin-right: 10px;
}
.code{
    border: 1px solid #333;
    border-radius: 5px;
    padding: 0 10px;
    margin: 10px;
    background: #f8f8f8;
}
code{
    font-size: 12px;
}