body {
    background-color: rgb(48, 48, 48);
    color: white;
}
#main {
    width: 80%;
    background-color:rgb(88, 88, 88);
    margin-left: auto;
    margin-right: auto;
    padding: 20px;
    border-radius: 10px;
}
#back {
    background-color: black;
    position: fixed;
    top: 0px;
    left: 0px;
    padding: 5px;
    font-size: 40px;
    text-align: center;
    cursor: pointer;
    z-index: 1;
    border-radius: 15px;
}
header {
    padding-top: 10px;
    padding-bottom: 10px;
    background-color: rgb(88, 88, 88);
    border-radius: 10px;
    margin-left: 40%;
    margin-right: 40%;
    text-align: center;
}
a {
    font-weight: bolder;
    color: white
}