body {
    background: linear-gradient(-20deg, #000, #040C54, blue);
    background-size: 100% 110%;
    min-height: 98vh;
}

.content {
    background-color:rgba(255,255,255,.8);
    border-radius:1.5em;
    box-shadow:0 0 .75em rgba(0,0,0,.65);
    box-sizing:border-box;
    left:50%;
    padding:10vmin;
    position:fixed;
    text-align:center;
    top:50%;
    transform:translate(-50%, -50%);
}

p {
    margin-right: 30vw;
    margin-left: 30vw;
}
  
.header {
    height: 25px;
    text-align: center;
    padding: 30px;
}
.centerTxt {
    text-align: center;
    color: white;
    font-size: 25px;
}
.header * {
    display: inline;
}
.header li a {
    margin: 20px;
    text-decoration: none;
    color: white;
    font-size: 17px;
    font-family: Calibri;
    font-weight: 550;
}