Tab #1 CSS

#tab1 {
    width: 13px;
    height: 13px;
    border: solid 1px #000; /*Here change the border color*/
    background-color: #000; /*Here change the background color*/
    margin-left: 10px;
    margin-top: 10px;
    position: fixed;
    overflow:hidden;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

#tab1:hover {
    width: 130px;
    height: 168px;
    background-color: #fff;
    z-index: 99999;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

#tab2 {
    width: 13px;
    height: 13px;
    border: solid 1px #000; /*Here change the border color*/
    background-color: #000; /*Here change the background color*/
    margin-left: 35px;
    margin-top: 10px;
    position: fixed;
    overflow:hidden;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

#tab2:hover {
    width: 130px;
    height: 168px;
    background-color: #fff;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

#tab3 {
    width: 13px;
    height: 13px;
    border: solid 1px #000; /*Here change the border color*/
    background-color: #000; /*Here change the background color*/
    margin-left: 10px;
    margin-top: 35px;
    position: fixed;
    overflow:hidden;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

#tab3:hover {
    width: 130px;
    height: 168px;
    background-color: #fff;
    -webkit-transition: opacity 0.4s linear;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
}

.inside {
    width: 110px;
    padding: 10px;
    padding-top: 8px;
    font-family: sans-serif;
    font-size: 9px;
    line-height: 150%;
    color: #5a5a5a; /*Change here the text color*/
    background-color: #fff; /*Change here the inside background color*/
    letter-spacing: .8px;
    text-align: center;
    padding-bottom:1000px;
    opacity: 0;
    -webkit-transition: opacity 0.3s linear;
    -webkit-transition: all 0.3s linear;
    -moz-transition: all 0.3s linear;
    -o-transition: all 0.3s linear;
}

.inside:hover {
    opacity: 1;
    -webkit-transition: opacity 0.3s linear;
    -webkit-transition: all 0.3s linear;
    -moz-transition: all 0.3s linear;
    -o-transition: all 0.3s linear;
}