[href*='ss='] {
    height: 62px;
    width: 50px;
    display: block;
}
[href$='ss=1'] {
    background: url(https://s20.postimg.org/h0m266h19/grid.png);
}
[href$='ss=2'] {
    background: url(https://s20.postimg.org/kk7zvz4bh/doodle.png);
}
[href$='ss=4'] {
    background: url(https://s20.postimg.org/lmi6ejppp/youtube.png);
}
[href$='ss=20034'] {
    background: url(https://s20.postimg.org/yqnqr8a1p/translate.png);
}
[href$='ss=10002'] {
    background: url(https://s20.postimg.org/6ds90r165/games.png);
}
[href$='ss=5'] {
    background: url(https://s20.postimg.org/ts08coyj1/smilies.png);
}