body {
  position: relative;
}
#btn {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 82px;
  background-color: #fff;
  padding: 0 45px;
  display: flex;
  box-sizing: border-box;
}
#btn .btn_bg {
  position: absolute;
  top: -48px;
  left: 0;
  width: 100%;
  height: 48px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, #FFFFFF 100%);
}
#btn span {
  margin-top: 2px;
  height: 48px;
  background: linear-gradient(270deg, #FDC132 0%, #FED931 100%);
  box-shadow: 0px 2px 5px 0px rgba(247, 215, 95, 0.45);
  flex: 1;
  line-height: 48px;
  font-weight: 600;
  font-size: 18px;
  color: #312809;
  border-radius: 24px;
  text-align: center;
}
.modal {
  position: fixed;
  left: 0;
  top: 0;
  padding: 0 10%;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  background-color: rgba(0, 0, 0, 0.5);
}
.modal .modal_box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 331px;
  height: 169px;
  background: #FFFFFF;
  border-radius: 8px;
  text-align: center;
}
.modal .modal_box p {
  margin: 0;
  font-size: 14px;
  color: #333333;
}
.modal .modal_box .title {
  margin-top: 22px;
  line-height: 24px;
  font-weight: 600;
  font-size: 17px;
}
.modal .modal_box .text {
  margin: 12px 0 22px;
}
.modal .modal_box .text p {
  margin: 0;
  line-height: 20px;
}
.modal .modal_box .modal_btn {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 48px;
  line-height: 48px;
  border-top: 1px solid #E2E2E2;
  display: flex;
}
.modal .modal_box .modal_btn span {
  flex: 1;
  font-size: 15px;
  color: #F8821E;
}
.modal .modal_box .modal_btn span:first-child {
  color: #333;
  border-right: 1px solid #E2E2E2;
}