* {
    margin: 0;
    padding: 0;
}

#igs {
    margin: 10px auto;
    width: 700px;
    height: 320px;
    position: relative;
}

.ig {
    position: absolute;
}

#tabs {
    position: absolute;
    list-style: none;
    background-color: rgba(255,255,255,.5);
    left: 300px;
    bottom: 10px;
    border-radius: 10px;
    padding: 5px 0 5px 5px;
}

.tab{
    float: left;
    text-align: center;
    line-height: 20px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    overflow: hidden;
    margin-right: 4px;
    border-radius: 100%;
    background-color: rgb(200,100,150);
}

.btn{
    position: absolute;
    color: #fff;
    top: 110px;
    width: 40px;
    height: 100px;
    background-color: rgba(255,255,255,.3);
    font-size: 40px;
    font-weight: bold;
    text-align: center;
    line-height: 100px;
    border-radius: 5px;
    margin: 0 5px;
}

.btn2{
    position: absolute;
    right: 0px;
}

.btn:hover{
    background-color: rgba(0,0,0,.7);
}