<style>
.calendar{
width :180px;
height :180px;
border: 1px #000000 solid;
text-align : center;
border-collapse:collapse;
}
.calendar th{
border: 1px #4F5450 solid;
background-color : lightgray;
}
.calendar td{
border: 1px #4F5450 solid;
}
.honjitu {
background-color : yellow;
}
.doyoubi {
color : blue;
background-color:#ABD2FF
}
.nitiyoubi {
color : red;
background-color:#FFC7CB
}
.heijitu {
color : black;
}
</style>
