header{
    height: 100vh;
    background-color: rgb(54, 64, 196);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;

}

h1,h2,h3{
    text-align: center;
    width: 90vw;
}

h3{
    margin-top: 30px;
    font-weight:100;
}
header a{
    color: white;
    width: 90vw;
    text-align: center;
    display: block;
}

header a:hover{
    font-size: 25px;
}
h1:hover{
    font-size: 40px;
}
h2:hover{
    font-size: 30px;

}
h3:hover{
    font-size: 25px;

}