a#login_pop:hover,
a#join_pop:hover {
  border-color: #eee;
}
.overlay {
  background-color: rgba(0, 0, 0, 0.6);
  bottom: 0;
  cursor: default;
  left: 0;
  opacity: 0;
  position: fixed;
  right: 0;
  top: 0;
  visibility: hidden;
  z-index: 1;

  -webkit-transition: opacity 0.5s;
  -moz-transition: opacity 0.5s;
  -ms-transition: opacity 0.5s;
  -o-transition: opacity 0.5s;
  transition: opacity 0.5s;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}
.popup {
  background-color: #fff;
  border: 1px solid #999;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  width: 600px;
  display: inline-block;
  left: 50%;
  opacity: 0;
  padding: 15px;
  position: fixed;
  text-align: justify;
  top: 40%;
  visibility: hidden;
  z-index: 10;
  -webkit-background-clip: padding-box;
  background-clip: padding-box;

  -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 0.5s, top 0.5s;
  -moz-transition: opacity 0.5s, top 0.5s;
  -ms-transition: opacity 0.5s, top 0.5s;
  -o-transition: opacity 0.5s, top 0.5s;
  transition: opacity 0.5s, top 0.5s;
}
@media (min-width: 25rem) {
  .popup {
    width: 400px;
  }
}
@media (min-width: 30rem) {
  .popup {
    width: 600px;
  }
}
@media (min-width: 60rem) {
  .popup {
    width: 600px;
  }
}
.overlay:target + .popup {
  top: 56%;
  opacity: 1;
  visibility: visible;
}
.close_modal {
  background: none;
  height: 30px;
  line-height: 30px;
  position: absolute;
  right: 0;
  text-align: center;
  text-decoration: none;
  top: 10px;
  right: 10px;
  width: 30px;
  border: none;
}
.close_modal:before {
  color: #666666;
  content: "x";
  font-size: 21px;
  font-weight: bold;
}
.close_modal:hover {
  color: #000;
}
.popup p,
.popup div {
  margin-bottom: 10px;
}
.popup label {
  display: inline-block;
  text-align: left;
  width: 120px;
}