#left-button{
  float: left;
}
#right-button{
  float:right
}
table, th, td {
  border-collapse: collapse;
}
table {
  border: 1px solid black;
}
td{
  width: calc(300px / 7 - 2px);
  height: calc(300px / 8 - 2px);
  border-radius: 4px;
  text-align: center;
  cursor: pointer;
}
.NotThisMonth{
  color:grey;
  cursor: default;
}
.ThisMonth:hover{
  background-color: gray;
  color:white
}
button{
  width: 24px;
  height: 24px;
  border:none;
  background:none;
}
.chooseDay{
  background:#a0a0ff;
  color:white
}