style.css

html, body {
    height: 100%;
}

html {
    display: table;
    margin: auto;
}

body {
    display: table-cell;
    vertical-align: middle;
}

.character-builder-component {
    width : 30pc;
    min-width: 320px;
    border-width: 1px;
    border-color: grey;
    border-style: solid;
    border-radius: 5px;
    padding: 4px;
    margin: 5px;
}

.plus-minus-button {
    float : right;
}

.background-selector {
    float : right;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: 1px solid grey;
    font-size: 16px;
    padding-left: 10px;
    padding-right: 10px;
}

.race-selector {
    float : right;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: 1px solid grey;
    font-size: 16px;
    padding-left: 10px;
    padding-right: 10px;
}