.open-view-button {
    box-shadow: 1px 1px 3px #757575;
    position: absolute;
    bottom: 40px;
    right: 20px;
    z-index: 10;
    background: url("360.png") center center no-repeat #fff;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
}

.open-view-button:hover {
    background: url("360.png") center center no-repeat #eee;
}