stil.css

body {
    font-family: 'Old Standard TT', serif; 
}
.rubrik {
    font-size: 10vw;
    font-family: 'Rye', cursive;
}
#chiffrera {
        display: none;
    }
#resultatRuta {
    display: none;
}
#knack {
    display: none;
}
#val {
    animation: dykupp 1s ease-out
}
button {
    font-size: 20px;
    height: 2em;
    border-color: grey;
    border-style: none;
    border-radius: 10px;
    background-image: linear-gradient(to right, yellowgreen, mediumseagreen);
    font-family: 'Old Standard TT', serif;
    z-index: 1;
}
button:hover {
    background-image: linear-gradient(to right, mediumseagreen, seagreen);
}
input[type=number] {
    background-image: linear-gradient(to right, yellowgreen, mediumseagreen);
    width: 5vw;
    height: 2em;
}
@media only screen and (max-width: 768px) {
    @keyframes forsvinn {
        from {
            opacity: 100%;
        }
        to {
            opacity: 0%;
        }
    }
    @keyframes dykupp {
        from {
            opacity: 0%;
        }
        to {
            opacity: 100%;
        }
    }
    body {
        text-align: center;
        background-image: linear-gradient(to bottom right, lightblue, lightcyan);
        background-size: contain;
        height: 100vh;
    }
    input[type=number] {
        width: 10vw;
    }
}
@media only screen and (min-width: 768px) {
    body {
        background-image: url("https://upload.wikimedia.org/wikipedia/commons/4/47/Caesar.jpg"); /* bakgrundsbild  */
        background-repeat: no-repeat;
        background-size: 633px 805px;
        background-position: center top;
    }
    #resultat {
        height: 80%;
        width: 90%;
        overflow: scroll;
    }
    .ruta {
        position: relative; /*en ruta */
        left: 30vw;
        top: 20vh;
        background-color: skyblue;
        border-color: black;
        border-style: solid;
        width: 40vw;
        height: 50vh;
        min-height: 300px;
        text-align: center;
        background-image: linear-gradient(to bottom right, powderblue, paleturquoise);
        border-radius: 10px;
        overflow: hidden;
    }
    .rubrik {
        transform: translateY(-10vh);
        font-size: 5vw;
    }
    .upp {
        transform: translateY(-20vh);
    }
    .upp_lite {
        transform: translateY(-10vh);
    }
    .nere {
        position: absolute;
        top: 70%;
        left: 45%;
    }
    button {
        font-size: 20px;
        height: 2em;
        border-color: grey;
        border-style: none;
        border-radius: 10px;
        background-image: linear-gradient(to right, yellowgreen, mediumseagreen);
        font-family: 'Old Standard TT', serif;
        z-index: 1;
    }
    button:hover {
        background-image: linear-gradient(to right, mediumseagreen, seagreen);
    }
    @keyframes forsvinn {
        from {
            transform: rotateY(0deg);
        }
        to {
            transform: rotateY(90deg);
        }
    }
    @keyframes dykupp {
        from {
            transform: rotateY(-90deg);
        }
        to {
            transform: rotateY(0deg);
        }
    }
}