changedetection.io/changedetectionio/static/styles/diff.scss

#diff-ui {

    background: #fff;
    padding: 2em;
    margin: 1em;
    border-radius: 5px;
    font-size: 9px;

    table {
        table-layout: fixed;
        width: 100%;
    }
    td {
        padding: 3px 4px;
        border: 1px solid transparent;
        vertical-align: top;
        font: 1em monospace;
        text-align: left;
    }
    pre {
            white-space: pre-wrap;
    }
}
h1 {
	display: inline;
	font-size: 100%;
}
del {
	text-decoration: none;
	color: #b30000;
	background: #fadad7;
}

ins {
	background: #eaf2c2;
	color: #406619;
	text-decoration: none;
}

#result {
	white-space: pre-wrap;
}

#settings {
    background: rgba(0,0,0,.05);
    padding: 1em;
    border-radius: 10px;
    margin-bottom: 1em;
    color: #fff;
    font-size: 80%;
    label {
	    margin-left: 1em;
	    display: inline-block;
	    font-weight: normal;
    }
}

.source {
	position: absolute;
	right: 1%;
	top: .2em;
}

@-moz-document url-prefix() {
	body {
		height: 99%; /* Hide scroll bar in Firefox */
	}
}