html, body {
    width: 100%;
    height: 100%;
    background-color: white;
}
.footer {
    position: relative;
    width: 100%;
    height: 40px;
    padding: 10px;
    display: flex;
    justify-content: space-around;
}
.footer button {
    width: 40px;
    height: 50px;
    font-size: 11px;
    background-color: transparent;
    border: none;
    color: black;
}
.footer button img {
    height: 20px;
    clear: both;
}