php-monstra/plugins/box/filesmanager/css/style.css

.upload-area {
    border:2px dashed #DEDEDE;
    width:200px;
    color:#DEDEDE;
    text-align: center;
    height: 34px;
    display: inline-block;
    float:left;
    margin-left: 10px;
}

.upload-area-dragenter {
    border: 2px dashed #428bca !important;
}

.upload-area-drop {
    border: 2px dashed #428bca;
}

.upload-progress {
    height: 100%;
    width: 0;
    background-color: #428bca;
    position: relative;
    float: left;
    max-width: 100%;
    color: #ffffff;
}

.upload-file-info {
    display: inline-block;
    float: left;
}

.fileupload-controls {
    float: left;
}

.upload-file-pholder {
    padding-top: 5px;
}

.file-size-max-upload {
    color: #ccc;
    text-decoration: none;
}

.file-size-max-upload:hover {
    color: #ccc;
    cursor: default;
    text-decoration: none;
}

@media (max-width: 320px) {
    .create-new-dir {
        float:left!important;
    }
}