@charset"UTF-8";

main {
    width: 800px;
    margin: 0 auto;
}

p.left {
    margin: 0 0 0 10px;
    width: calc(100%/2 - 40px);
    border: 1px solid #000;
    padding: 5px;
    height: 212px;
    float: left;
}

img {
    float: right;
    margin-bottom: 20px;
}

p.back {
    clear: both;
}

h1 {
    color: blue;
}