@charset "utf-8";
.it {
  padding: 90px 0 60px;
  color: #555555;
  font-family: sans-serif;
}
.it-use {
  width: 33%;
  margin-top: 35px;
}
.it-use-inner {
  padding: 25px 30px;
  background-color: #dbe0e4;
  border-radius: 7px;
  box-shadow: 1px 1px 4px #d2d4d6;
  text-align: center;
  margin: 0 20px;
}
.it-image {
  width: 100%;
  margin-bottom: 20px;
  border-radius: 5px;
}
.it-title {
  margin-bottom: 8px;
  color: #ff0000;
}
.it-text {
  font-size: 14px;
  text-align: left;
}
.it-use-wrapper {
  display: flex;
  flex-wrap: wrap;
}
.article-title {
  font-size: 22px;
  margin-top: 30px;
  color: #ff0000;
  border: solid 2px #ff0000;
  padding: 0.5em;
  border-radius: 0.5em;
}
.article-text {
  padding: 20px;
}
.sub-title {
  font-size: 20px;
  font-weight: bold;
  color: #333333;
  padding: 0.5em;
  background: #dbe0e4;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.23);
  margin-top: 10px;
  margin-left: 20px;
  border-left: solid 10px #339966;
}
.sub-text {
  padding: 20px 5px;
  margin: 0 20px;
  line-height: 22px;
}
.sub-article {
  margin: 0 40px;
  line-height: 24px;
}
.ref {
  padding: 10px;
  text-align: right;
  line-height: 24px;
  margin-right: 10px;
}