.fileinput-button {
    position: relative;
    overflow: hidden;
    margin-bottom: 10px;
}
.fileinput-button input[type=file] {
    position: absolute;
    top: 0;
    right: 0;
    min-width: 100%;
    min-height: 100%;
    font-size: 100px;
    text-align: right;
    filter: alpha(opacity=0);
    opacity: 0;
    outline: none;
    background: white;
    cursor: inherit;
    display: block;
}

.ng-valid[required] {
    border-left: 5px solid #42A948; /* green */
}

.ng-invalid {
    border-left: 5px solid #a94442; /* red */
}

.progress .bar {
    height: 12px;
    background-color: olivedrab;
}