body {
    margin: auto;
    background: url('images/static.gif');
    background-color: rgba(0, 0, 0, 0.5);
    background-blend-mode: multiply;
    color: white;
    text-align: center;
    width: 545px;
    font-family: Helvetica;
}

a {
    color: white;
}

a:hover {
    color: #a0a0a0;
}

div {
    display: grid;
    margin-top: 50%;
    row-gap: 25px;
}

@font-face {
    font-family: Helvetica;
    src: url('font/Helvetica.ttf')
}

@media screen and (max-width: 430px)
{
    body {
        width: 380px;
    }
}

@media screen and (max-width: 390px)
{
    body {
        width: 340px;
    }
}

@media screen and (max-width: 360px)
{
    body {
        width: 320px;
    }
}