Vertically centering Bootstrap modal window

Question

I would like to center my modal on the viewport (middle) I tried to add some css properties

 .modal { position: fixed; top:50%; left:50%; }   

Answer 1

For those who are using angular-ui bootstrap can add the below classes based on above info:

Note: No other changes are needed and it shall resolve all modals.

// The 3 below classes have been placed to make the modal vertically centered
.modal-open .modal{
    display:table !important;
    height: 100%;
    width: 100%;
    pointer-events:none; /* This makes sure that we can still click outside of the modal to close it */
}

.modal-dialog{
    display: table-cell;
    vertical-align: middle;
    pointer-events: none;
}

.modal-content {
    /* Bootstrap sets the size of the modal in the modal-dialog class, we need to inherit it */
    width:inherit;
    height:inherit;
    /* To center horizontally */
    margin: 0 auto;
    pointer-events: all;
}