div.two-lines, .two-lines {
    height: 48px;
    overflow: hidden;
}

.four-lines {
    height: 56px;
    overflow: hidden;    
}


.btn-dark {
    --fc-btn-color: #fff;
    --fc-btn-bg: #5a6f77;
    --fc-btn-border-color: #5a6f77;
    --fc-btn-hover-color: #fff;
    --fc-btn-hover-bg: #26404b;
    --fc-btn-hover-border-color: #1a3540;
    --fc-btn-focus-shadow-rgb: 38,64,75;
    --fc-btn-active-color: #fff;
    --fc-btn-active-bg: #334b55;
    --fc-btn-active-border-color: #1a3540;
    --fc-btn-active-shadow: inset 0 3px 5px rgba(0,0,0,.125);
    --fc-btn-disabled-color: #fff;
    --fc-btn-disabled-bg: #5a6f77;
    --fc-btn-disabled-border-color: #001e2b;
}