.modal-k {
    display: none;
    position: fixed;
    z-index: 999;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: #000;
    background-color: rgba(0, 0, 0, .4)
}

.loader-k {
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -25px 0 0 -25px;
    border: 7px solid #f3f3f3;
    border-radius: 50%;
    border-top: 7px solid #c00;
    width: 40px;
    height: 40px;
    -webkit-animation: spin .4s linear infinite;
    animation: spin .4s linear infinite;
    z-index: 999
}

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

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