/*html
{
    touch-action: none;
}*/

.vss-prev-position
{
    position:fixed;
    left:25px;
    z-index: 999999999;
    top: 50%;
}
.vss-prev-button-position
{
    position:fixed;
    left:15px;
    z-index: 999999999;
}
.vss-next-position
{
    position:fixed;
    right:25px;
    z-index: 999999999;
    top: 50%;
}
.vss-next-button-position
{
    position:fixed;
    right:15px;
    z-index: 999999999;
}
.round-button {
    width:100%;
}
.round-button-circle {
    width: 100%;
    height:0;
    padding-bottom: 100%;
    border-radius: 50%;
    overflow:hidden;
    //background: gray; 
    box-shadow: 0 0 3px gray;
}
.round-button a {
    display:block;
    float:left;
    width:100%;
    padding:10%;
    padding-top:50%;
    padding-bottom:50%;
    line-height:1em;
    margin-top:-0.5em;
    text-align:center;
    color:#e2eaf3;
    font-family:Verdana;
    font-size:1.2em;
    font-weight:bold;
    text-decoration:none;
}
.button_img_prev
{
    margin-left:-25px;
}
.button_img_next
{
    margin-right:-25px;
}
.button_b
{
    text-decoration: none; 
    min-width:100px; 
    margin:0 auto;
}
.button_img_prev_version
{
    float:left;
    margin-left:-1px;
}
.button_img_next_version
{
    float:left;
    margin-left:18px;
}