.MessageBox {
    position: relative;

    display: inline-block;

    font-family: var(--message-box-font-family);
    font-size: var(--message-box-fontSize);
    line-height: var(--message-box-lineHeight);
    user-select: none;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.MessageBox-Content {
    position: relative;

    box-sizing: border-box;
    padding: var(--message-box-content-spaceAll);
}

.MessageBox_layout_plain .MessageBox-Content {
    text-align: center;
}

.MessageBox-Backdrop {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

.MessageBox-Backdrop::before {
    display: block;

    width: 100%;
    height: 100%;

    content: '';
}

.MessageBox-Background {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;

    overflow: hidden;
}