.ddl__loading {
    display: none;
}

.ddl__loading.start {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1010;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ddl__loading.show {
    opacity: 1;
}

.ddl__loading__spinner {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
    background-color: #ffffff;
}

.ddl__loading__spinner div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 64px;
    height: 64px;
    margin: 8px;
    border-radius: 50%;
    animation: ddl__loading__spinner 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-width: 8px;
    border-style: solid;
    border-color: #00539f transparent transparent transparent;
}

.ddl__loading__spinner div:nth-child(1) {
    animation-delay: -0.45s;
}

.ddl__loading__spinner div:nth-child(2) {
    animation-delay: -0.3s;
}

.ddl__loading__spinner div:nth-child(3) {
    animation-delay: -0.15s;
}

@-webkit-keyframes ddl__loading__spinner {
    0% {
        transform: rotate(0deg);
    }
    
    100% {
        transform: rotate(360deg);
    }
}

@-moz-keyframes ddl__loading__spinner {
    0% {
        transform: rotate(0deg);
    }
    
    100% {
        transform: rotate(360deg);
    }
}

@keyframes ddl__loading__spinner {
    0% {
        transform: rotate(0deg);
    }
    
    100% {
        transform: rotate(360deg);
    }
}