main {
  width: 100%;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
  font-size: 14px;
}

#title {
  text-align: center;
  font-size: 30px;
  font-weight: bold;
  border-width: 2px 15px;
  border-color: #0c3483;
  border-style: solid;
  padding: 20px;
}

section {
  width: 100%;
}

.s_title {
  width: 95%;
  background-color: #ecf4fb;
  font-size: 25px;
  padding: 5px 2.5%;
  margin-top: 20px;
  margin-bottom: 10px;
  border-left: #0c3483 solid 5px;
}

.section_contents {
  width: 95%;
  margin: 20px auto;
  text-align: justify;
  line-height: 160%;
}

section:last-child {
  margin-bottom: 50px;
}

#date {
  margin-top: 20px;
  margin-left: 5%;
}

#date-table {
  width: 100%;
}

table {
  border-collapse: collapse;
  border: solid 1px;
}

th {
  vertical-align: baseline;
  border-right: solid 1px;
  padding: 10px 15px;
}

td {
  padding: 10px 15px;
}

#program table {
  width: 90%;
  margin: 20px auto;
}

#program table th {
  width: 100px;
}

#moderator {
  margin-top: 20px;
  margin-bottom: 20px;
}

.content {
  width: 90%;
  margin-left: 5%;
}

.c_title {
  font-size: 18px;
  width: 95%;
  padding: 5px 2.5%;
  border-left: #0c3483 solid 5px;
}

.c_button {
  display: block;
  width: 50%;
  margin: 10px;
  padding: 5px;
  font-size: 15px;
  background-color: #0c3483;
  color: #fff;
  text-align: center;
  text-decoration: none;
}

.content li {
  margin: 10px 30px;
}

#map {
  width: 90%;
  margin: 40px auto;
}
#map img {
  width: 55%;
}

.indent-1 {
  padding-left: 1em;
  text-indent: -1em;
}

.indent-2 {
  padding-left: 2em;
  text-indent: -2em;
}

.indent-3 {
  padding-left: 3em;
  text-indent: -3em;
}

.indent-4 {
  padding-left: 4em;
  text-indent: -4em;
}

.indent-6 {
  padding-left: 6em;
  text-indent: -6em;
}

.flex {
  display: flex;
}

.large {
  font-size: large;
}

.x-small {
  font-size: 16px;
}

.small {
  font-size: smaller;
}

.gray {
  background-color: #f7f7f7;
}

.blue {
  background-color: #ecf4fb;
}

.red {
  color: red;
}

.bold {
  font-weight: bold;
}

.desktop_none {
  display: none;
}

.hover:hover {
  opacity: 0.6;
}

.test-strikethrough {
  text-decoration: line-through;
  margin: 0;
  padding: 0;
}