File: demo.css

html, body, select, input {
    font: 14px 'Open Sans', Arial, sans-serif
}

body {
    background-color: #fff;
    width: 960px;
    margin: 0px auto
}

pre, code {
    font: 17px 'Inconsolata', monospace;
}

h1, h2 {
    color: #777
}

pre {
    background-color: #f5f5f5;
    border: solid 1px #ccc;
    padding: 10px;
    border-radius: 5px;
    width: auto
}

em {
    font-style: normal;
    background-color: #f5f5f5;
    color: #357ebd;
    border: solid 1px #ccc;
    padding: 3px 5px;
    border-radius: 3px
}

em.func {
    color: red
}

.s2d-tbl-countries {
    width: 600px
}

.s2d-tbl-countries td {
    height: 100%;
}

.s2d-tbl-countries button {
    display: block;
    height: 60px;
}

.result {
    width: 600px;
    float: left
}

#countries {
    float: right
}

#country-result {
    background-color: #f5f5f5;
    border: solid 1px #ccc;
    border-radius: 5px;
    padding: 5px
}