.hiddenItem {
        display: none;
    }
    #button {
        display: block;
        margin: 20px auto;
        padding: 10px 30px;
        background-color: #eee;
        border: solid #ccc 1px;
        cursor: pointer;
    }

    #overlay {
        position: fixed;
        top: 0;
        z-index: 100;
        width: 100%;
        height: 100%;
        display: none;
        background: rgba(0,0,0,0.6);
    }

    .cv-spinner {
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .spinner {
        width: 40px;
        height: 40px;
        border: 4px #ddd solid;
        border-top: 4px #2e93e6 solid;
        border-radius: 50%;
        animation: sp-anime 0.8s infinite linear;
    }

    @@keyframes sp-anime {
        100% {
            transform: rotate(360deg);
        }
    }

    .is-hide {
        display: none;
    }