.calendar-wrapper {
  max-width: 310px;
  padding: 0.5rem;
  border: 4px solid #004100;
  background-color: lightgrey;
  position: relative;
  z-index: 20;
}
.calendar-header {
  position: relative;
  background-color: #00a700;
  padding: 8px 0;
  overflow: auto;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-content: center;
  justify-content: space-between;
}
.calendar-header .bokay {
  margin: 4px auto 0 auto;
}
.calendar-header .leftArrow {
  width: 0;
  height: 0;
  border-width: 10px;
  border-style: solid;
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-left-color: transparent;
  border-right-color: #fff;
  margin-left: 5px;
  cursor: pointer;
}
.calendar-header .rightArrow {
  width: 0;
  height: 0;
  border-width: 10px;
  border-style: solid;
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-left-color: #fff;
  border-right-color: transparent;
  margin-left: 5px;
  cursor: pointer;
}
ul.weekTip, ul.date {
  font-size: 0;
}
ul.weekTip > li, ul.date > li {
  display: inline-block;
  box-sizing: border-box;
  font-size: 1rem;
  color: #222;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  line-height: 2.25rem;
  text-align: center;
  cursor: pointer;
  margin-bottom: 5px;
}
ul.date > li.active {
  background-color: #00a700;
  color: #ffffff;
}
ul.date > li.across {
  border: 1px solid #00a700;
  color: #00a700;
}
ul > li.weekend {
  color: #c81101;
}
ul > li.disabled {
  color: lightgray;
}
#demo {
  position: relative;
}