.gradesButton {
  display: inline-block;
  position: relative;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-radius: 30px;
  color: var(--main-text-color);
  background-color: var(--button-bg-color);
  padding: 0 3px;
  text-align: center;
  /* min-width: 50px; */
  width: 50px;
  opacity: 0;

  transition: width 0.5s;
}

.gradesButton:hover {
  background-color: var(--button-hover-bg);
  width: 80px;
}

.gradesButton:focus {
  /* display: inline-block; */
  opacity: 1;
  background-color: var(--button-hover-bg);
  width: 80px;
}

.grades {
  display: inline-block;
  position: relative;
  vertical-align: middle;
  /* text-align: center; */

  background-color: var(--main-bg-color);
  /* border-left: 1px solid var(--border-color); */
  border-right: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
  border-radius: 30px;
  width: 70px;

  transition: width 1s;

  overflow: hidden;
  white-space: nowrap;
}

.grades:hover {
  width: 340px;
}

.grades:hover > .gradesButton {
  opacity: 1;
}

.grades:has(.displayButton:focus),
.grades:has(.gradesButton:focus) {
  width: 340px;
}

.grades:has(.displayButton:focus) > .gradesButton,
.grades:has(.gradesButton:focus) > .gradesButton {
  opacity: 1;
}

.displayButton {
  display: inline-block;
  position: relative;
  text-align: center;
  width: 50px;
  margin-left: 10px;
}