.download-file {
    /*position: relative;*/
    margin: 0px auto;
    display: block;
    text-align: center;
    top: 20px;
    border-radius: 5px;
    margin-top: 40px;
    overflow: hidden;
}

.download-file a {
    text-decoration: none;
    display: inline-block;
    border: #CCCCCC 1px solid;
    background-color: #FFFFFF;
    border-radius: 5px;
    height: 2em;
    width: 6em;
    color: #444549;
    line-height: 2em;
    transition: 1s;
}

.download-file a:hover {
    background-color: #CCCCCC;
}

@media (max-width: 400px) {
    .download-file a:active {
        background-color: #cccccc;
        transition: 1s;
    }
    .download-file a:visited {
        background-color: #FFFFFF;
        transition: 1s;
    }
}

#wrapper-A3 {
    text-align: center;
}