.container {

}

.container img{
    width:100px;
    height:auto; 
}

.container-2 {
    float:left;
    width:50%
}

.container-2 img{
    width:100px;
    height:auto; 
}

.container-3 {
    float:right;
    width:50%
}

.container-3 img{
    width:100px;
    height:auto; 
}