*{
    padding: 0;
    margin: 0;
}

.bg-image{
    background-image: url(copa\ \(2\).jfif);
    background-size: cover;
    background-position: center;

    display: grid;
    place-content: center;
    text-align: center;
    min-height: 100%;
    position: fixed;
    margin-top:-10px;
    width: 100%;
    isolation: isolate;

}
.bg-image::after{
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    background:#0a0a0a;
    opacity: .75;
    bottom: 0;
}

#nav1
{  
    background-color:#152836; 
    opacity: 0.6; 
    filter:(opacity=50);       
}

body{
    font-size: 18px;
    font-family: sans-serif;
    background: #ebebeb;
    }
    .container{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    flex-direction: column;
    }
    .div1{
    box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.2);
    height: 300px;
    width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(to right, lightblue, whitesmoke);
    color: white;
    margin: 100px 0;
    z-index: 1;
    border-radius: 7px;
    }

#nav1{
    background-color: #152836;
    opacity: .9;
}