styles.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: blueviolet;

}

.wrapper {
  background: #fff;
  width: 450px;
  border-radius: 10px;
}

.wrapper header {
  display: flex;
  align-items: center;
  padding: 25px 30px;
  justify-content: space-between;
}

header .current-date {
  font-size: 1.45rem;
  font-weight: 500;
}

header .icons span {
  height: 38px;
  width: 38px;
  background-color: lightblue;
  margin: 0 1px;
  text-align: center;
  cursor: pointer;
  font-size: 1.9rem;
  line-height: 38px;
  border-radius: 50%;
}

header .icons span:last-child {
  margin-right: -10px;
}

header .icons span:hover {
  background-color: lightgrey;
}

.calender {
  padding: 20px;
  text-align: center;
}

.calender ul {
  display: flex;
  list-style: none;
  flex-wrap: wrap;
}

.calender ul li {
  position: relative;
  width: calc(100%/7);
}

.calender .days {
  margin-bottom: 20px;

}

.calender .days li {
  cursor: pointer;
  margin-top: 30px;
  z-index: 1;
}

.calender .weeks li {
  font-weight: 500;
}
.days li.inactive{
  color:gray
}

.calender .days li::before {
  position: absolute;
  border-radius: 50%;
  content: "";
  height: 40px;
  width: 40px;
  top: -30%;
  z-index: -1;
  left: 15%;
  transform: translate((-50%, -50%));
  background-color: rgb(233, 227, 227);
}

.days li:hover::before {
  background: lightblue;
}


.days li.active::before{
  background-color: lightcoral;
}