.icon-middle {
    position: fixed;
    right: 15px;
    bottom: 200px;
    transition: all .2s;
    z-index: 5;
}
.icon-middle .icon {
    margin-bottom: 10px;
    z-index: 1;
    width: 55px;
    height: 55px;
    background: #3697D7;
    color: #fff;
    display: inherit;
    text-align: center;
    line-height: 53px;
    cursor: pointer;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    transition: all .3s;
}
.icon-middle .icon:hover {
    box-shadow: 0 8px 25px -8px #071666;
}
.icon-middle .icon img {
    width: auto;
    max-width: 100%;
}
.icon-middle .icon img.icon-svg {
    width: calc(100% - 25px);
    vertical-align: middle;
}
.icon-middle i {
    font-size: 23px;
    padding-top: 15px
}
.mini-icons .icon-middle {
    right: -60px;
}
#middle-control {
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    width: 40px;
    height: 40px;
    position: fixed;
    bottom: 70px;
    right: 20px;
    cursor: pointer;
    z-index: 90;
    background: #3697D7;
    -webkit-box-shadow: 0 0 15px 1px rgba(69, 65, 78, 0.2);
    box-shadow: 0 0 15px 1px rgba(69, 65, 78, 0.2);
    opacity: 1;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
    border-radius: 4px;
    padding: 9px;
}
#middle-control i {
    font-size: 21px;
    color: #ffffff;
}