.loader {
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loader > img {
    width: 100px;
}

.loader.hidden {
    animation: fadeOut 1s;
    animation-fill-mode: forwards;
    display: none;
}

@keyframes fadeOut {
    100% {
        opacity: 0;
        visibility: hidden;
    }
}

.thumb {
    height: 100px;
    border: 1px solid black;
    margin: 10px;
}



/* No Content */
.page-content {
    background: #fff;
}
.placeholder-content {
    height: 305px;
    overflow: hidden;
    background: #000;
    position: relative;
    animation-duration: 1.7s;
    animation-fill-mode: forwards;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
    animation-name: placeholderAnimate;
    background: #f6f7f8;
    background: linear-gradient(to right, #eee 2%, #ddd 18%, #eee 33%);
    background-size: 1300px;
}
.placeholder-content_item {
    width: 100%;
    height: 20px;
    position: absolute;
    background: #fff;
    z-index: 2;
}
.placeholder-content_item:after,
.placeholder-content_item:before {
    width: inherit;
    height: inherit;
    content: '';
    position: absolute;
}
.placeholder-content_item:nth-child(1) {
    top: 60%;
    left: 0;
}
.placeholder-content_item:nth-child(2) {
    top: 80%;
    left: 0;
}

@keyframes placeholderAnimate {
    0% {
        background-position: -650px 0;
    }

    100% {
        background-position: 650px 0;
    }
}