body{
    background-image:url(https://images5.alphacoders.com/519/519169.jpg) ;
    background-position: center,center;
    background-repeat: no-repeat;
    background-size:cover;
    background-attachment: fixed;
}
h1{
    background-color: brown;
}
.mg{
    width:700px;
        height: 400px;
        background: color #96054e;
        background-color: rgba(255, 255, 255, 0.5);
        border: 3px solid #46ca09;
        padding: 20px;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 20px;
        color:#333;
        margin: 0 auto;
        text-align: center;
        position: relative;
        top: 50%;
        transform: translateY(-3%);
        box-shadow: 0 0 100px rgb(0, 0, 0);
        border-radius: 12px;
        float: left;
}
.mt{
    width:700px;
    height:300px;
    background: color #96054e;
    background-color: rgba(255, 255, 255, 0.5);
    border: 3px solid #46ca09;
    padding: 20px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
    color:#333;
    margin: 0 auto;
    text-align: center;
    position: relative;
    top: 50%;
    transform: translateY(-3%);
    box-shadow: 0 0 100px rgb(0, 0, 0);
    border-radius: 12px;
    float: left;
}
.mv{
    width:700px;
    height:700px;
    background: color #96054e;
    background-color: rgba(255, 255, 255, 0.5);
    border: 3px solid #46ca09;
    padding: 20px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
    color:#333;
    margin: 0 auto;
    text-align: center;
    position: relative;
    top: 50%;
    transform: translateY(60%);
    box-shadow: 0 0 100px rgb(0, 0, 0);
    border-radius: 12px;
    float: left;
}