style.css

#overlay {
    position: fixed;
    width: 100%;
    height: 95%;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 2;
    cursor: pointer;
}
.cancel-button{
    margin-left: 45%;
}
.fileUpload {
    width: 231px;
    height: 28px;
    border: black dotted;
    border-radius: 14px;
    padding: 131px;
    margin-left: 150px;
    margin-top: 100px;
}
.hit-button{
    margin: 50px;
    width: 100px;
    height: 55px;
}
.checkbox-set{
    display: inline-block;
    width: 180px;
}
.loader {
    margin-left: 42%;
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #3498db;
    width: 120px;
    height: 120px;
    -webkit-animation: spin 2s linear infinite; /* Safari */
    animation: spin 2s linear infinite;
}
.hide {
    display: none;
}
.status {
    float: left;
}
/* Safari */
@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}