.tt_activity_modal {
  position: absolute;
  background-color: rgba(0, 0, 0, 0.2);
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 999;
  display: none;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}
.tt_activity_modal > div {
  width: 400px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 2em;
  background: #ffffff;
  color: #333333;
  box-shadow: 0px 2px 6px rgba(0, 0, 0, 0.25);
}
.tt_activity_modal header {
  font-weight: bold;
}
.tt_activity_modal h1 {
  font-size: 150%;
  margin: 0 0 15px;
  color: #333333;
}
.tt_activity_classic {
  display: block;
}
a > .tt_activity_modal_close {
  color: #aaa;
  line-height: 50px;
  font-size: 80%;
  position: absolute;
  right: 0;
  text-align: center;
  top: 0;
  width: 70px;
  text-decoration: none;
}
a > .tt_activity_modal_close:hover {
  color: #000;
}
a > .tt_activity_modal_close_hidden {
  display: none;
}
#timetracking-activity-mode-picker {
  position: absolute;
  right: 2px;
  top: 35px;
}
#timetracking-activity-mode-picker a {
  color: dimgray;
  text-decoration: none;
}
#timetracking-activity-mode-picker a:hover {
  color: lightslategray;
  text-decoration: none;
}
