index.css

.cardxx {
    width: 18rem;
}

div.alert {
    display: none;
}

.card p.card-text {
    min-height: 100;
}

div.dropdown {
    display: inline-block;
}

div#card-template {
    display:none;
}

button.save-btn {
    z-index: 10;
}

button#new-btn {
    position: relative;
    border-radius: 50%;
}

.card .aqua {
    background-color: aqua;
}

.card .blue {
    color: white;
    background-color: blue;
}

.card .yellow {
    background-color: yellow;
}

.card .lime {
    background-color: lime;
}

.card .purple {
    color: white;
    background-color: purple;
}

.card .black {
    color: white;
    background-color: black;
}

.btn-circle.btn-xl {
    width: 70px;
    height: 70px;
    padding: 10px 16px;
    border-radius: 35px;
    font-size: 24px;
    line-height: 1.33;
}