.center .inviterimageurl img,.center .receiveimageurl img {
    width: 100%;
    display: block;
}

.center .inviter-btn,.center .receive-btn {
    position: fixed;
    bottom: 0px;
    width: 100%;
}

#inviter-btn,#receive-btn {
    width: 100%;
    color: #FFF;
    height: 3.4em;
}

.share-image {
    visibility: visible;
    opacity: 1;
    background: rgba(0, 0, 0, .5);
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    z-index: 155;
    transition: all .5s linear 0s;
    -moz-transition: all .5s linear 0s;
    -webkit-transition: all .5s linear 0s;
    -o-transition: all .5s linear 0s;
    -ms-transition: all .5s linear 0s;
}

.share-image[class*="hide"] {
    visibility: hidden;
    opacity: 0;
}

.share-image img {
    width: 100%;
}