html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  font-weight: normal;
}
h1,
h2 {
  margin: 0;
  padding: 0;
}
.content {
  position: absolute;
  width: 60%;
  height: 600px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
ul {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow: hidden;
}

li {
  list-style-type: none;
  width: 25%;
  float: left;
  text-align: center;
}
.content h2 {
  padding: 16px 0;
  border-bottom: 1px solid #888;
  border-top: 1px solid #888;
}
.content h2 span {
  font-size: 32px;
  color: #e20020;
  font-weight: normal;
}
.content h2 span:last-of-type {
  font-size: 16px;
  color: #888888;
  cursor: pointer;
}
.content ul {
  padding: 15px 0 0 0;
}
.content ul li {
  font-size: 16px;
  line-height: 48px;
  background-color: #eee;
  cursor: pointer;
}
.content ul li.active {
  color: #fff;
  background-color: #e20020;
}
.other {
  display: none;
}
.main {
  box-shadow: 0 0 20px rgb(0 0 0 / 10%);
  padding: 20px 0;
  margin-top: 30px;
}
form {
  width: 96%;
  margin: 0 auto;
}
form label {
  width: 100%;
  line-height: 34px;
  font-weight: normal;
}
form input,
form select,
form option {
  width: 100%;
}
form input[type="checkbox"] {
  height: 18px;
  margin: 0;
  display: inline-block;
  width: 18px;
  vertical-align: middle;
}
.form-horizontal .form-group {
  margin: 0;
}
.form-horizontal .form-item {
  display: none;
}
.form-horizontal .form-item:first-of-type {
  display: block;
}
.next {
  width: 92px;
  margin-top: 15px;
  font-size: 16px;
  line-height: 38px;
  background-color: #e20020;
  border-radius: 19px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
.sure {
  width: 15%;
  margin-top: 15px;
  font-size: 16px;
  line-height: 38px;
  background-color: #e20020;
  border-radius: 19px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
.code {
  width: 112px;
  margin: 10px 0;
  line-height: 42px;
  background-color: #4C5C79;
  text-align: center;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
}
.code.disabled{
  background-color: #8F9092;
}
button {
  border: none;
  background-color: transparent;
  outline: none;
}
.input-group.date {
  position: relative;
  width: 45%;
}
#datetimepicker2 {
  position: absolute;
  top: 33px;
  left: 50%;
}
.input-group.date::before {
  position: absolute;
  content: "开始用药时期";
  width: 25%;
  background-color: #eee;
  left: 0;
  z-index: 5;
  text-align: center;
}
#datetimepicker2::before {
  content: "停止用药时期";
}
.input-group.date input {
  padding-left: 30%;
}
.tipText{
  text-align: center;
}
@media screen and (max-width: 1440px) {
  .input-group.date {
    width: 100%;
  }
  #datetimepicker2 {
    position: relative;
    top: 5px;
    left: 0;
  }
}
@media screen and (max-width: 768px) {
  .content {
    width: 92%;
  }
  .input-group.date {
    width: 100%;
  }
  #datetimepicker2 {
    position: relative;
    top: 5px;
    left: 0;
  }
  .input-group.date::before {
    width: 30%;
  }
  .input-group.date input {
    padding-left: 40%;
  }
  .content h2 span {
    font-size: 26px;
  }
  .content ul li {
    line-height: 38px;
  }
}
<!--耗时1755762043.2325秒-->