.body_block{
    opacity: 0.8;
    z-index: 1000;
    display: none;
}

.loader {
    position: relative;
    width: 45px;
    height: 45px;
    left: 50%;
    top: 50%;
    margin-left: -22px;
    margin-top: 2px;
    -webkit-animation: rotate 1s infinite linear;
    -moz-animation: rotate 1s infinite linear;
    -ms-animation: rotate 1s infinite linear;
    -o-animation: rotate 1s infinite linear;
    animation: rotate 1s infinite linear;
    border: 3px solid rgba(0, 0, 0, 1);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    border-radius: 50%;
}
.loader span {
    position: absolute;
    width: 45px;
    height: 45px;
    top: -3px;
    left: -3px;
    border: 3px solid transparent;
    border-top: 3px solid rgba(255, 255, 255, 1);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    border-radius: 50%;
}
@-webkit-keyframes rotate {
    0% {
        -webkit-transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(360deg);
    }
}
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}