.header {
    text-align: center;
    vertical-align: top;
    position: absolute;
    height: 12.5%;
    width: 100%;
    background: linear-gradient(to right, rgb(0, 0, 255), rgb(255, 0, 255));
    padding: 0px;
    margin: 0px;
    z-index: 3;
}

body {
    padding: 0%;
    margin-top: 0%;
    margin-left: 0%;
    margin-right: 0%;
    background-color: rgb(32, 32, 32);

}

.main_div {
    z-index: 1;
    text-align: center;
    margin-top: 17.5%;
    margin-left: 15%;
    margin-right: 15%;
    padding-bottom: 2%;
    width: 70%;
    background: rgb(20, 20, 20);
    position: absolute;

}


.heading {
    color: whitesmoke;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    vertical-align: middle;
    font-size: 150%;
    user-select: none;
    -webkit-user-select: none;
}



.button:hover {
    transform: scale(110%);
}


.button {
    height: 250px;
    width: 250px;
    padding-top: 25px;
    padding-left: 15px;
    padding-right: 15px;
    padding-bottom: 5px; 
    z-index: 2;
}