*{
    margin: 0;
    padding: 0;
}
html{
    height: 100%;
}
body{
    height: 100%;
    background: radial-gradient(rgb(255, 255, 255), rgb(255, 255, 255));
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}
nav{
    width: 100%;
    height: 85px;
    background-color: rgb(255, 255, 255);
    box-shadow: 2px 2px 4px rgb(0, 0, 0);
}
nav ul a{
    float:right;
    list-style: none;
    font-family: Arial;
    color: #2300a3;  
    font-size: 22px;
    text-decoration: none;
    padding: 22px;
}
nav ul h1{
    text-align: center;
    font-size: 68px;
}
nav ul img{
    float: left;
    block-size: 80px;
}

table{
 font-size: 22px;
}
td, th{
    border-left: 2px solid black;
    border-right: 2px solid black;
    border-bottom: 4px solid black;
    border-top: 4px solid black;
    padding: 10px 10px;
    text-align:middle;
}
thead{
    font-size: 25px;
    background-color: rgb(111, 111, 255);
}
tbody{
    font-size: 20px;
    text-align: center;
}