style.css

ul {
    text-align: center;
    list-style-type: none;
    margin: 50px auto 50px auto;
    padding: 0;
}

li {
    display: inline-block;
    direction: rtl;
    margin: 0 30px;
    padding: 10px 50px;
    font-size: 20px;
    border-width: 2px;
    border-style: solid;
    border-radius: 35px;
    color: black;
    cursor: pointer;
}

#blue-item {
    border-color: #64B5F6;
}

#blue-item.clicked {
    background-color: #64B5F6;
    color: white;
}

#green-item {
    border-color: #66bb6a;
}

#green-item.clicked {
    background-color: #66bb6a;
    color: white;
}

#lime-item {
    border-color: #afb42b;
}

#lime-item.clicked {
    background-color: #afb42b;
    color: white;
}

#orange-item {
    border-color: #ffa726;
}

#orange-item.clicked {
    background-color: #ffa726;
    color: white;
}

[class*="clicked"] span {
    color: white;
}
.amount {
    color: gray;
}

/* .card-panel {
    opacity: 1;
    height: 200px;
    transition: opacity 2s, height 0s;
}
.animation {
    animation-name:  cardHide;
    animation-duration: .5s;
    animation-fill-mode: forwards;
}

@keyframes  cardHide{
    0% {
        opacity: 1;
        height: auto;
    }
    100% {
        opacity: 0;
        height: 0;
    }
} */