def METHOD_NAME():
    return "<html>" \
           "<head><title>Screenshots comparison</title>" \
           "<style>" \
           "body {background-color: white;} " \
           "img {width: 100%;} " \
           "td {width: 50%;  border: 1px solid black; padding: 5px; vertical-align: bottom;} " \
           "th {padding-top: 10px;} " \
           "table {width: 100%; text-align: center; border-collapse: collapse; background-color: rgb(248,248,248);} " \
           ".differences-table {width: 50%; margin-left: 25%; margin-right: 25%;} " \
           ".treshold-cointainer {width: 100%; text-align: center;} " \
           ".slider {width: 85%; display: block; margin: auto;} " \
           "h2 {float: left; margin: 10px;} " \
           "h3 {text-align: right; margin: 10px;} " \
           ".site-container {margin: 50px 0px 30px 0px; border: 1px solid black;} " \
           ".site-container-td {border: none; padding: 10px;} " \
           ".site-container-header {background-color: rgb(240,240,240); border-bottom: 1px solid black;} " \
           ".visible {display: table;} " \
           ".hidden {display: none;} " \
           "#treshold-value {font-weight: bold;} " \
           "</style>" \
           "</head>" \
           '<body><h1>Screenshots comparison</h1>' \
           '<div class="treshold-cointainer"><input type="range" min="0" max="255" value="0" class="slider" id="threshold">' \
           '<p>The treshold for the mean value of pixels in the Differences image (Screenshots below treshold will not be shown on this page.): <span id="treshold-value"></span></p></div>'