#led1 {
       opacity: 0.7;
}
#led2 {
       opacity: 0.7;
}
#led3 {
       opacity: 0.7;
}
#led4 {
       opacity: 0.7;
}
#led5 {
       opacity: 0.7;
}
#led6 {
       opacity: 0.7;
}
#led7 {
       opacity: 0.7;
}
#led8 {
       opacity: 0.7;
}
#led9 {
       opacity: 0.7;
}
#led10 {
       opacity: 0.7;
}
#led11 {
       opacity: 0.7;
}
#led12 {
       opacity: 0.7;
}
#led13 {
       opacity: 0.7;
}
#led14 {
       opacity: 0.7;
}
#led15 {
       opacity: 0.7;
}
#led16 {
       opacity: 0.7;
}
#led17 {
       opacity: 0.7;
}
#led18 {
       opacity: 0.7;
}
#led19 {
       opacity: 0.7;
}