owl/docs/playground/samples/slots/slots.css

.main {
    display: flex;
}

.card {
    display: flex;
    flex-direction: column;
    background-color: #eeeeee;
    width: 200px;
    height: 100px;
    margin: 10px;
    border: 1px solid gray;
}

.card.full {
    height: 100px;
}

.card.small {
    height: 25px;
}

.card-title {
    flex: 0 0 25px;
    font-weight: bold;
    background-color: darkcyan;
    color: white;
    padding: 2px;
}

.card-title button {
    float: right;
}

.card-content {
    flex: 1 1 auto;
    padding: 5px;
    border-top: 1px solid white;
}

.card-footer {
    border-top: 1px solid white;
}