.myImg {
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
}

    .myImg:hover {
        opacity: 0.7;
    }

.modal {
    display: none;
    position: fixed;
    z-index: 97;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.9);
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}


.modal-content, #caption {
    -webkit-animation-name: zoom;
    -webkit-animation-duration: 0.6s;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
    from {
        -webkit-transform: scale(0)
    }

    to {
        -webkit-transform: scale(1)
    }
}

@keyframes zoom {
    from {
        transform: scale(0)
    }

    to {
        transform: scale(1)
    }
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

    .close:hover,
    .close:focus {
        color: #bbb;
        text-decoration: none;
        cursor: pointer;
    }
.img1 {
    width: 50%;
    
    float: left;
}
.img2 {
    width: 50%;
    
}
.img3 {
    width: 33.3%;
    max-width: 300px;
    float: left;
}

@media screen and (max-width: 780px) {
    .modal-content {
        width: 100%;
    }
    .img1 , .img2 , .img3{
        width:100%;
        float:none;
        max-width:none;
    }
}