buttongradient.h

const char buttongradient_css[] PROGMEM = R"=====(
<style type="text/css">
/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#3240ff+0,d6d6d6+50,eeff00+100 */
.$scheme{
/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/$hourcolor+0,0026ff+100 */
background: $hourcolor; /* Old browsers */
background: -moz-linear-gradient(left,  $hourcolor 0%, $minutecolor 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,$hourcolor), color-stop(100%,$minutecolor)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left,  $hourcolor 0%,$minutecolor 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left,  $hourcolor 0%,$minutecolor 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(left,  $hourcolor 0%,$minutecolor 100%); /* IE10+ */
background: linear-gradient(to right,  $hourcolor 0%,$minutecolor 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='$hourcolor', endColorstr='$minutecolor',GradientType=1 ); /* IE6-9 */

}
</style>
)=====";