styles.css

@import url("https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=Rubik&display=swap");

* {
  user-select: none;
}

.App {
  font-family: sans-serif;
  text-align: center;
}

.controls {
  width: 234px;
  padding: 0 2px;
  display: flex;
  justify-content: space-between;
  font-family: "DM Serif Display";
  margin-bottom: 4px;
}

.controls-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-family: "Rubik";
  color: #808080;
  background-color: #e9e8e8;
  border-radius: 4px;
  transition: all 0.15s ease-in-out;
}

.controls-button:hover {
  background-color: #c7c7c7;
  cursor: pointer;
}

.week {
  display: flex;
}

.day {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin: 2px;
  font-family: Rubik;
  border-radius: 8px;
  transition: all 0.15s ease-in-out;
}

.day:hover {
  color: rgb(32, 108, 250);
  border-color: rgb(32, 108, 250);
  background-color: rgb(206, 223, 255);
  cursor: pointer;
}

.day-previous-month {
  color: rgb(204, 204, 204);
  border-color: rgb(204, 204, 204);
}

.day-next-month {
  color: rgb(204, 204, 204);
  border-color: rgb(204, 204, 204);
}

.day-selected,
.day-selected:hover {
  color: rgb(255, 255, 255);
  border-color: rgb(32, 108, 250);
  background-color: rgb(0, 87, 250);
}