html,
body {
    height: 100%;
    padding: 0px;
    margin: 0px;
    overflow: hidden;
}

body .pma-ui-viewport-container {
    height: calc(100% - 64px);
    width: 100%;
}

button {
    border: 1px solid lightgrey !important;
}

.btn-group {
    padding: 0 5px;
}

#viewer {
    border: 2px solid rgba(0, 60, 136, .5);
}

#display-tools {
    padding: 15px 5px;
    text-align: center;
}

#focus-button {
    width: 120px;
}