#wrap {
  min-height: calc(100vh - 4.5rem);
  margin-top: 4.5rem;
  background: #6998ab;
  max-width: 768px;
  margin: 4.5rem auto 0;
}

header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 768px;
  height: 4.5rem;
  background: #fff;
  z-index: 999;
  border-bottom: 1px solid #ddd;
}
header ul {
  display: flex;
  height: 100%;
}
header ul li {
  width: 33.3%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
}
header ul li:not(:last-child) {
  border-right: 1px solid #ddd;
}

main {
  padding: 3rem 2rem;
}
main .item {
  background: #fff;
  border-radius: 2rem;
  overflow: hidden;
  box-shadow: rgba(99, 99, 99, 0.5) 0px 2px 8px 0px;
}
main .item:not(:last-of-type) {
  margin-bottom: 2.5rem;
}
main .item img {
  width: 100%;
}
main .item .txt_wrap {
  padding: 2.5rem 1.8rem;
}
main .item .txt_wrap h1 {
  font-size: 2.3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  position: relative;
  padding-left: 1.4rem;
  line-height: 1.5;
}
main .item .txt_wrap h1::before {
  content: "";
  width: .4rem;
  height: 90%;
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  background: #e34a4a;
}
main .item .txt_wrap p {
  font-size: 1.7rem;
  line-height: 1.6;
  color: #555;
}

main .item .txt_wrap img {
  margin-top: 2rem;
}
main .item .txt_wrap .q {
  margin-bottom: 2rem;
}
main .item .txt_wrap p em {
  font-weight: 800;
  font-size: 1.9rem;
}
main .item .txt_wrap .q em {
  color: #009528;
}
main .item .txt_wrap .a em {
  color: #e35959;
}

footer {
  background: #666;
  padding: 3.5rem 2rem;
}
footer p {
  font-size: 1.5rem;
  text-align: center;
  line-height: 1.5;
  color: #fff;
}