body,
html {
    height: 100%;
    width: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 14px;
    font-weight: 200;
    background-color: #1f2025;
    color: #ffffff;
    background-color: black;
    margin: 0;
    padding: 0;
}

#header {
    width: 100%;
    display: block;
    text-align: center;
    margin-top: 50px;
}

#select {
    width: 100%;
    margin-top: 50px;
    text-align: center;
    position: absolute;
}

button {
    width: 40vw;
    height: 10vh;
    font-size: medium;
    margin: 3px;
    font-size: x-large;
    margin-bottom: 20px;
    border-radius: 15px;
}

input {
    width: 90vw;
    height: 10vh;
    font-size: medium;
    margin: 3px;
    font-size: x-large;
    margin-bottom: 20px;
    border-radius: 15px;
}

.image_rotate {
    animation: rotation 30s infinite linear;
}

@keyframes rotation {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(359deg);
    }
}