.overlay {
    background-color: gray;
    height: 100vh;
    left: 0;
    opacity: 0.77;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 50;
}

.dialog {
    background: #fff none repeat scroll 0 0;
    border: 2px solid #ccc;
    border-radius: 5px;
    box-shadow: 0 0 10px #222;
    min-height: 300px;
    min-width: 500px;
    height: auto;
    width: auto;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    position: fixed;
    z-index: 50;
}

.dialog-header,
.dialog-body,
.dialog-footer{
  padding: 5px 10px 0;
}

.dialog-header h2{
  margin: 0;
}

.dialog-body b{
  display: inline-block;
  min-width: 140px;
}