body {
    margin-left: 10%;
    margin-right: 10%;
    text-align: left
    }
img {
    border: 0
    }
h1, h2, h3, h4 {
    text-align: center
    }
hr {
    width: 33%;
    text-align: center
    }
ul {
    margin-left: 25%;
    margin-right: 25%
    }
div {
    margin-left: 20%;
    margin-right: 20%
    }