.overlay {
  background-color: rgba(0, 0, 0, 0.7);
  bottom: 0;
  cursor: default;
  left: 0;
  opacity: 0;
  position: fixed;
  right: 0;
  top: 0;
  visibility: hidden;
  z-index: 99999;
    -webkit-transition: opacity .5s;
    -moz-transition: opacity .5s;
    -ms-transition: opacity .5s;
    -o-transition: opacity .5s;
    transition: opacity .5s;
}
.popup {
  background-color: #fff;
  border: 3px solid #fff;
  display: inline-block;
  left: 50%;
  opacity: 0;
  padding: 15px;
  width: 300px;
  height: 323px;
  position: fixed;
  text-align: justify;
  top: 40%;
  visibility: hidden;
  z-index: 999999;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  -webkit-transition: opacity .5s, top .5s;
  -moz-transition: opacity .5s, top .5s;
  -ms-transition: opacity .5s, top .5s;
  -o-transition: opacity .5s, top .5s;
  transition: opacity .5s, top .5s;
  border-radius: 11px;
}
.popup .close_window {
  width: 6px;
  height: 17px;
  position: absolute;
  padding: 1px 9px 4px 9px;
  top: -15px;
  right: -15px;
  cursor: pointer;
  color: #fff;
  background-color: #181413;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  -o-border-radius: 50%;
  -ms-border-radius: 50%;
  border-radius: 50%;
  text-align: center;
  box-shadow: -1px 1px 3px rgba(0, 0, 0, 0.5);
}
.popup .close_window:hover {
  background: -webkit-gradient(linear, left top, right top, from(#051fb8), to(#3d51c8));
  background: -webkit-linear-gradient(top, #051fb8, #3d51c8);
  background: -moz-linear-gradient(top, #ff5f0, #3d51c87);
  background: -o-linear-gradient(top, #051fb8, #3d51c8);
  background: -ms-linear-gradient(top, #051fb8, #3d51c8);
  background: linear-gradient(top, #051fb8, #3d51c8);
  background-color: #051fb8;
  border: 1px solid #00385E;
}
.popup .close_window:active {
  background: #8f9be0;
}