.certificate{
    width: 100%;
    height: 350px;
}
.ce_img{
    height: 200px;
    width: 1100px;
    margin: 0 auto;
    
}
.ce_img img{
    height: 150px;
    width: 150px;
    padding: 0 20px;
}
.ce_img img:hover {
    cursor: pointer;
}

@media only screen and (max-width: 600px) {

    .certificate{
        width: 100%;
        height: 480px;
    }

    .ce_img img{
        height: auto;
        width: 100%;
        max-width: 300px;
        margin: auto;
        padding: 0 10px;
    }
    .ce_img{
        height: 200px;
        max-width: 300px;
        width: 100%;
        margin: 0 auto;
        
    }
}