_modal.scss

.modal-header {
    background-color: $lighter-gray;
    border: 0;
    border-radius: 10px 10px 0 0;
    padding: 20px;
    text-align: center;

    h4 {
      margin: 0;
    }
    .btn-close {
      padding-left: 10px;
      font-size: 30px;
    }
}
.modal-content {
    border: 0 none;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.15), 0 0 1px 1px rgba(0, 0, 0, 0.1);
}
.modal-dialog {
    padding-top: 60px;
}
.modal-body{
    padding: 20px 50px;
    min-height: 240px;
    max-height: calc(100vh - 150px);

    pre {
        font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
        font-size: 16px;
        overflow-x: auto;
        overflow-y: auto;
        background-color: $white-color;
        border: 0;
    }
    #citation-text {
        font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
        font-size: 16px;
        overflow-x: auto;
        overflow-y: auto;
    }
    #spinner {
        position: relative;
        top: 20px;
    }
}
.modal-footer {
    border-top: 1px solid $medium-gray;
    padding: 0px;

   .left-side, .modal-footer .right-side {
        display: inline-block;
        text-align: center;
        width: 49%;
    }
    .btn-simple {
        padding: 20px;
        width: 100%
    }
    .dropdown-divider {
        background-color: $medium-gray;
        display: inline-block;
        float: inherit;
        height: 63px;
        margin: 0px -3px;
        position: absolute;
        width: 1px;
    }
}
.modal.fade .modal-dialog {
    transform: none;
    -webkit-transform: none;
    -moz-transform: none;
}
.modal.in .modal-dialog {
    transform: none;
    -webkit-transform: none;
    -moz-transform: none;
}
.modal-backdrop.in {
    opacity: 0.25;
}