/* ————— border ————— */
.br_1px {
  border: 1px solid;
}
.br_l1px {
  border-left: 1px solid;
}
.br_t1px {
  border-top: 1px solid;
}
.br_b1px {
  border-bottom: 1px solid;
}

/* ————— border-radius ————— */
.rad_0_5vh {
  border-radius: 0.5vh;
}
.rad_t0_5vh {
  border-radius: 0.5vh 0.5vh 0.5vh 0.5vh;
}