table.css

div, span {
  margin: 0px;
  padding: 0px;
}
html, body {
  width: 100%;
  height: 100%;
  margin: 0;
}
a {
  text-decoration: inherit;
  color: inherit;
}
#mainGrid {
  display: grid;
  grid-template-columns: 1fr 4fr;
}

th, tr, td {
  width: 100px;
}
table {
  table-layout: fixed;
  width: 100%;
  height: 100%;
  text-align: center;
  border-collapse: collapse; /*선을 한줄로*/
}
.day {
  background-color:#FFF0E0;
  font-family:sans-serif;
  font-weight:bold;
  height: 35px;
  border: solid 2px #FF7F54;
  border-bottom: 0px;
}
.tableRow {
  height: 50px;
  border: solid 1.5px #FF7F54;
  border-bottom: 0px;
  border-right: 0px;
  margin:-2px;
}