php-sandbox/styles.css

body, textarea, input {
    font: 12px monospace;
}

body {
    background: #eee;
}

input {
    width: 99%;
    margin: auto;
    display: block;
    height: 30px;
    font-size: 20px;
}

a {
    color: #88f;
}

.output, textarea {
    border: 1px solid #aaa;
    background: #fff;
}

textarea {
    width: 99%;
    height: 400px;
    margin: auto;
    display: block;
    -moz-border-radius: 5px 5px 0 0;
    -webkit-border-radius: 5px 5px 0 0;
    border-radius: 5px 5px 0 0;
}

.output {
    padding: 5px 10px;
    margin: 10px .4%;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
}

.output img.loader {
    margin-bottom: -4px;
}

.statusbar {
    margin: 0 .5% 10px;
    padding: 2px 5px;
    -moz-border-radius: 0 0 5px 5px;
    -webkit-border-radius: 0 0 5px 5px;
    border-radius: 0 0 5px 5px;
    border: 1px solid #aaa;
    border-top: 0;
}

.help {
    width: 33%;
    float: left;
    white-space: pre;
}

.footer {
    width: 100%;
    clear: left;
    text-align: center;
    color: #aaa;
}
.footer a {
    color: #aaa;
}