body {
    margin: 0;
    padding: 0px 0px 30px 0px;
}

article {
    padding: 0px 15px 0px 15px;
}

.row {
    display: flex;
    justify-content: center;
}

span.ripple {
    position: absolute;
    /* The absolute position we mentioned earlier */
    border-radius: 50%;
    transform: scale(0);
    animation: ripple 600ms linear;
    background-color: rgba(255, 255, 255, 0.7);
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

h1 {
    text-align: center;
}

input,
button {
    border-radius: 8px;
    border: 1px solid transparent;
    padding: 0.6em 1.2em;
    font-size: 1em;
    font-weight: 500;
    font-family: inherit;
    color: #0f0f0f;
    background-color: #ade6ff;
    transition: border-color 400ms;
    box-shadow: 0 2px 0.3em rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    outline: 0;
    border: 0;
    cursor: pointer;
    outline: none;
}

button:hover {
    border-color: #396cd8;
}


input {
    border-radius: 8px;
    border: 1px solid transparent;
    padding: 0.6em 1.2em;
    font-size: 1em;
    font-weight: 500;
    font-family: inherit;
    color: #0f0f0f;
    background-color: #ffffff;
    transition: border-color 400ms;
    box-shadow: 0 2px 0.3em rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    outline: 0;
    border: 0;
    cursor: pointer;
    outline: none;
}