body {
    background-color: cadetblue;
}

.h1css{
    text-align:center;
    background-color:antiquewhite;
}

.imgg {
    float: left;
    width: 33%;
    height: 600px;
}

.imgg img {
    width: 100%;
    height: 500px;
}
.clear{
    clear:both;
}