.image-preview {
    width: 6vw;
    height: 6vw;
    position: relative;
    overflow: hidden;
    /*background-color: #c3abab;*/
    background-image: url("/static/img/upload.png");
    background-size: contain;
    border: #cccccc solid 1px;
    border-radius: 8px;
    margin: 5px;
    float: left;


}

.image-preview input {
    line-height: 200px;
    font-size: 200px;
    position: absolute;
    opacity: 0;
    z-index: 10;
}

.image-preview label {
    position: absolute;
    z-index: 5;
    opacity: 0;
    /*opacity: 0.8;*/
    cursor: pointer;
    background-color: #bdc3c7;
    width: 200px;
    height: 50px;
    font-size: 20px;
    line-height: 50px;
    text-transform: uppercase;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    text-align: center;
}