body {
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% {

        background-position: 0% 50%;

    }
    50% {

        background-position: 100% 50%;

    }
    100% {

        background-position: 0% 50%;

    }
}


h1 {
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
    color: white;
    font-size: 40px;
}

button {
    background-color: rgb(255, 255, 255);
    height: 75px;
    width: 20%;

    border-radius: 5px;

    font-size: larger;
    text-align: center;
    color: rgb(0, 0, 0);

    margin: 20px;
    margin-left: 40%;

    cursor: pointer;
}

.cointeiner {
    margin: 0 auto;
}

button:hover {
    box-shadow: 1px 1px 1px 1px;
}

.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}