body{
    padding: 0;
    margin: 0;
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #333;
}
.flex {
    display: flex;
}
a {
    outline: none;
    color: black;
}
button {
    border: 0;
    padding: 0;
    margin: 0;
}