#twitter_button {
    width: 60px;
    height: 60px;
    margin: auto;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    -webkit-transition: all; /* For Safari 3.1 to 6.0 */
    transition: all 0.5s;
    cursor: pointer;
    box-shadow: 4px 4px 2px #888888;
	z-index: 10;
}

#twitter_button_mobile {
    display:none;
    width: 30px;
    height: 30px;
    margin: auto;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    -webkit-transition: all; /* For Safari 3.1 to 6.0 */
    transition: all 0.5s;
    cursor: pointer;
    box-shadow: 4px 4px 2px #888888;
}

    #twitter_button:hover {
        opacity: 0.8;
     
    }

@media only screen and (max-width: 550px) {
    #twitter_button {
        display: none;
    }

    #twitter_button_mobile {
        display:block;
    }
}

.twitter-feed {
    margin: auto;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    max-width: 400px;
    height: 400px;
    display: none;
    box-shadow: 4px 4px 2px #888888;
	z-index: 10;
}

#close_twitter_button img {
    height: 30px;
    width: 30px;
}

#close_twitter_button {
    height: 30px;
    width: 30px;
    margin: auto;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 300px;
    z-index: -1;
    cursor: pointer;
    box-shadow: 4px 4px 2px #888888;
}

#close_twitter_button
{

    display:none;
}