.calendar {
  width: 100%;
  padding: 5px 20px 20px 20px;
  box-sizing: border-box;
  /* border: 1px solid; */
}

.calendar>.header {
  text-align: center;
}

.calendar>.header>.title {
  width: 50%;
  display: inline-block;
}

.calendar>.header>.calendar_btn {
  width: 30px;
  height: 30px;
  border: none;
  padding: 0;
  background-color: #ffffff;
  vertical-align: middle;
  color: black;
}

.calendar>.day {
  width: 100%;
  display: table;
  table-layout: fixed;
}

.calendar>.day>div {
  display: table-cell;
  text-align: center;
  height: 50px;
  vertical-align: middle;
}

.calendar>.day>div:first-child {
  color: red;
}

.calendar>.day>div:last-of-type {
  color: blue;
}

.calendar>.dates {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
}

.calendar>.dates>.date {
  text-align: center;
  width: calc(100%/7);
  height: 50px;
  box-sizing: border-box;
  line-height: 3;
  border-radius: 3px;
}

.calendar>.dates>.date:nth-child(7n) {
  color: blue;
}

.calendar>.dates>.date:nth-child(7n+1) {
  color: red;
}

.calendar>.dates>.last {
  color: #c8c8c8 !important;
}

.calendar>.dates>.next {
  color: #c8c8c8 !important;
}