.hg-theme-default {
    background-color: transparent;
    padding: 0;
}

.hg-theme-default .hg-button {
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    color: #444;
    border-radius: .25rem;
    box-shadow: none;
}

.hg-theme-default .hg-button[data-skbtnuid^=numbers-] {
    width: 33%;
    max-width: none;
}

.hg-theme-default .hg-button[data-skbtnuid^=kor-] {
    width: 20%;
    max-width: none;
}

.hg-button-numbers, .hg-button.hg-functionBtn.hg-button-ent {
    max-width: 80px;
}

.hg-button.hg-functionBtn {
    color: #fff;
    background-color: #6c757d;
    border-color: #6c757d;
    box-shadow: none;
}