.lds-dual-ring {
    display: inline-block;
    width: 128px;
    height: 128px;
    position:fixed;
    left:50%;
    margin-left:-48px;
    top:50%;
    margin-top:-48px;
    z-index:100;
}

.lds-dual-ring:after {
    content: " ";
    display: block;
    width: 100px;
    height: 100px;
    margin: 14px;
    border-radius: 50%;
    border: 8px solid #337ab7;
    border-color: #337ab7 transparent #337ab7 transparent;
    animation: lds-dual-ring 0.8s linear infinite;
}

.lds-dual-ring-sm {
    display: inline-block;
    width: 24px;
    height: 24px;
    position:absolute;
    top:14px;
    left:-18px;
    z-index:100;
}

.lds-dual-ring-sm:after {
    content: " ";
    display: block;
    width: 20px;
    height: 20px;
    margin: 0px;
    border-radius: 50%;
    border: 2px solid #337ab7;
    border-color: #337ab7 transparent #337ab7 transparent;
    animation: lds-dual-ring 0.8s linear infinite;
}

@keyframes lds-dual-ring {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}


@media only screen and (max-width:374px){
    .lds-dual-ring-sm {
        top:-25px;
        left:109px;
    }
}