body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 12px;
    max-width: 960px;
    margin: auto;
}
h1 {
    font-size: 3em;
    letter-spacing: .6em;
    padding-top: 1em;
    padding-bottom: 1em;
}

h2 {
    font-size: 1.5em;
    padding-bottom: 1em;
}

h3 {
    font-size: 1em;
    padding-bottom: 1em;
}


    main { 
        display: grid;
        grid-template-columns: 40% 60%;
        margin-top: 3em;
    }
   
    header {
        text-align: center;
        margin: auto 2em;
    }
    
    section {
        margin: auto 1em 4em 2em;
    }
    
    i {
        margin-right: .5em;
    }
    
    p {
        margin: .2em auto
    }
    
    hr {
        border: none;
        background-color: lightgray;
        height: 1px;
    }
    
    h1, h2, h3 {
        font-weight: 100;
        margin-bottom: 0;
    }
    
#mainLeft {
    border-right: 1px solid lightgray;
}