html > * {
    margin: 0;
    padding: 0;
    text-align: center;
}
body, o-loop {
    width: 100%;
    height: 3000px;
    display: block;
}
.box {
    width: 60px;
    margin: 1px;
    padding: 1px;
    font-size: 12px;
    text-align: center;
    display: inline-block;
    background: lightgray;
}
.box input {
    width: 90%;
    margin: auto;
    display: block;
}
.wrap {
    overflow: hidden;
}
.loader, .loader:after {
    border-radius: 50%;
    width: 10em;
    height: 10em;
}
.loader {
    margin: 60px auto;
    font-size: 10px;
    position: relative;
    text-indent: -9999em;
    border-top: 1.1em solid rgba(0, 0, 0, 0.1);
    border-right: 1.1em solid rgba(0, 0, 0, 0.1);
    border-bottom: 1.1em solid rgba(0, 0, 0, 0.1);
    border-left: 1.1em solid black;
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-animation: load 1.1s infinite linear;
    animation: load 1.1s infinite linear;
}
@-webkit-keyframes load {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}
@keyframes load {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}