.icon_scan{
    display: inline-block;
    vertical-align: middle;
    width: 45px;
    height: 45px;
    /* here will be replace sprite image path, and auto set the background-position */
    background: url("./images/scan@2x.png?__sprite");
}

.icon_shake{
    display: inline-block;
    vertical-align: middle;
    width: 45px;
    height: 45px;
    /* here will be replace sprite image path, and auto set the background-position */
    background: url("./images/shake@2x.png?__sprite");
}

.icon_nearby{
    display: inline-block;
    vertical-align: middle;
    width: 45px;
    height: 45px;
    /* here will be replace sprite image path, and auto set the background-position */
    background: url("./images/nearby@2x.png?__sprite");
}

.icon_not_exist{
    display: inline-block;
    vertical-align: middle;
    width: 56px;
    height: 56px;
    /* here will be replace sprite image path, and auto set the background-position */
    background: url("./images/not_exist@2x.png?__sprite");
}