html, body {
    height: 100%;
}
html {
    display: table;
    margin: auto;
}
body {
    display: table-cell;
    color: #444;
    font: 13px "Open Sans", "trebuchet ms", arial, sans-serif;
    vertical-align: middle;
}
.header {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 25px;
}
.error-title {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
}
.error-message {
    font-size: 14px;
    margin-bottom: 15px;
}
.browser-support {
    margin-bottom: 25%;
}
.browser-support table tr > td{
    width: 100px;
    text-align: center;    
}