.pop-black {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 150;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
}
/*================= loader =================*/
.lds-ring {
    display: inline-block;
    position: relative;
    width: 64px;
    height: 64px;
    top: 50%;
    left: 50%;
    margin-left: -32px;
    margin-top: -32px;
}

.lds-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 51px;
    height: 51px;
    margin: 6px;
    border: 6px solid #fff;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #fff transparent transparent transparent;
}

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

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

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

@keyframes lds-ring {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}