Problem here is you are using time parameter as a class name instead you can use below format
.seconds10, .seconds9, .seconds8, .seconds7, .seconds6 { color: #00b200 ;}
.seconds4 { color: #E5E500 ;}
.seconds3 { color: #FFA500 ;}
.seconds2 { color: #FF5719 ;}
.seconds1 { color: #FF0000;}
10
