@charset "UTF-8";

body{
    background-image: url();
    background-color: rgb(0, 0, 0);
    width: 900px;
    margin: 0 auto;
    margin-top: 30px;
}

.navi{
    margin-bottom: 80px;
    background-color: aliceblue;
}

.grimg{
    text-align: center;
}

.grimg img{
    width: 500px;
    margin: 50px;

}