.sipu-model-main {
  text-align: center;
  overflow: hidden;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0; /* z-index: 1050; */
  -webkit-overflow-scrolling: touch;
  outline: 0;
  opacity: 0;
  -webkit-transition: opacity 0.15s linear, z-index 0.15;
  -o-transition: opacity 0.15s linear, z-index 0.15;
  transition: opacity 0.15s linear, z-index 0.15;
  z-index: -1;
  overflow-x: hidden;
  overflow-y: auto;
}

.model-open {
  z-index: 99999;
  opacity: 1;
  overflow: hidden;
}
.sipu-model-inner {
  -webkit-transform: translate(0, -25%);
  -ms-transform: translate(0, -25%);
  transform: translate(0, -25%);
  -webkit-transition: -webkit-transform 0.3s ease-out;
  -o-transition: -o-transform 0.3s ease-out;
  transition: -webkit-transform 0.3s ease-out;
  -o-transition: transform 0.3s ease-out;
  transition: transform 0.3s ease-out;
  transition: transform 0.3s ease-out, -webkit-transform 0.3s ease-out;
  display: inline-block;
  vertical-align: middle;
  width: 750px;
  margin: 30px auto;
  max-width: 97%;
}
.sipu-model-wrap {
  display: block;
  width: 100%;
  position: relative;
  background-color: #fff;
  border: 1px solid #999;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  -webkit-box-shadow: 0 3px 9px rgba(0, 0, 0, 0.5);
  box-shadow: 0 3px 9px rgba(0, 0, 0, 0.5);
  background-clip: padding-box;
  outline: 0;
  text-align: left;
  padding: 20px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  max-height: calc(100vh - 70px);
  overflow-y: auto;
}
.model-open .sipu-model-inner {
  -webkit-transform: translate(0, 0);
  -ms-transform: translate(0, 0);
  transform: translate(0, 0);
  position: relative;
  z-index: 999;
}
.model-open .sipu-bg-overlay {
  background: rgba(0, 0, 0, 0.3);
  z-index: 99;
}
.sipu-bg-overlay {
  background: rgba(0, 0, 0, 0.7);
  height: 100vh;
  width: 100%;
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  -webkit-transition: background 0.15s linear;
  -o-transition: background 0.15s linear;
  transition: background 0.15s linear;
}
.sipu-close-btn {
  position: absolute;
  right: 0;
  top: -30px;
  cursor: pointer;
  z-index: 99;
  font-size: 30px;
  color: #fff;
}

@media screen and (min-width: 800px) {
  .sipu-model-main:before {
    content: "";
    display: inline-block;
    height: auto;
    vertical-align: middle;
    margin-right: -0px;
    height: 100%;
  }
}
@media screen and (max-width: 799px) {
  .sipu-model-inner {
    margin-top: 45px;
  }
}