.log_btn {

}
.log_btn:hover {

}
.log_btn.btn-big {

}
a.btn-close {
  color: #aaa;
  font-size: 50px;
  text-decoration: none;
  position: absolute;
  right: 30px;
  top: 20px;
}
.btn-close:hover {
  color: #919191;
}
.modal:before {
  content: "";
  display: none;
  background: rgba(0, 0, 0, 0.6);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
}
.modal:target:before {
  display: block;
}
.modal:target .modal-dialog {
  -webkit-transform: translate(0, 0);
  -ms-transform: translate(0, 0);
  transform: translate(0, 0);
  top: 20%;
}
.modal-dialog {
  border: #333 solid 0px;
  border-radius: 5px;
  margin-left: -230px;
  position: fixed;
  left: 50%;
  top: -100%;
  z-index: 11;
  width: 460px;
  -webkit-transform: translate(0, -500%);
  -ms-transform: translate(0, -500%);
  transform: translate(0, -500%);
  -webkit-transition: -webkit-transform 0.3s ease-out;
  -moz-transition: -moz-transform 0.3s ease-out;
  -o-transition: -o-transform 0.3s ease-out;
  transition: transform 0.3s ease-out;
}
.modal-body {
  padding: 20px;
}
.modal-header,
.modal-footer {
  padding: 10px 20px;
}
.modal-header {
  border-bottom: #eee solid 0px;
}
.modal-header h2 {
  font-size: 20px;
}
.modal-footer {
  border-top: #eee solid 1px;
  text-align: right;
}
@media screen and (max-width: 768px) {
.modal-dialog {
  border: #333 solid 0px;
  border-radius: 5px;
  margin-left:2.5%;
  position: fixed;
  left: 0;
  top: -100%;
  z-index: 11;
  width: 95%;
  -webkit-transform: translate(0, -500%);
  -ms-transform: translate(0, -500%);
  transform: translate(0, -500%);
  -webkit-transition: -webkit-transform 0.3s ease-out;
  -moz-transition: -moz-transform 0.3s ease-out;
  -o-transition: -o-transform 0.3s ease-out;
  transition: transform 0.3s ease-out;
  
}

:target.modal .modal-dialog{ top:10%;}

}
@media screen and (max-width: 320px) {
:target.modal .modal-dialog{ top:5%;}
}