/* Screenshot success: a green frame over the captured area that fades out. */
app { width: 100%; height: 100%; background-color: transparent; }
box.flash {
  width: 100%; height: 100%; box-sizing: border-box;
  border: 4px solid #4fd1a5; background-color: rgba(79, 209, 165, 0.12);
}
box.s0 { opacity: 1; }
box.s1 { opacity: 0.9; }
box.s2 { opacity: 0.8; }
box.s3 { opacity: 0.7; }
box.s4 { opacity: 0.6; }
box.s5 { opacity: 0.5; }
box.s6 { opacity: 0.4; }
box.s7 { opacity: 0.3; }
box.s8 { opacity: 0.2; }
box.s9 { opacity: 0.1; }