body {
    margin: 0;
    padding: 0;
}

.box {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    min-height: 100vh;
}

.box-deuxieme {
    display: flex;
    align-items: baseline;
    height: 100vh;
    min-height: 100vh;
}

.box-troisieme {
    display: flex;
    align-items: flex-end;
    height: 100vh;
    min-height: 100vh;
}

.box-quatrieme {
    display: flex;
    justify-content: right;
    align-items: right;
    height: 100vh;
    min-height: 100vh;
}

button {
    background-color: #03A9F4;
    font-size: 10em;
    font-family: monospace;
    box-shadow: 6px 6px 20px 4px rgba(0 ,0 ,0 , 0.2);
    padding: 30px;
    transition: 0.2s;
    cursor: pointer;
    border: none;
    outline: none;
    border-radius: 5px;
}

a {
    text-decoration: none;
    color: #fff;
}

button:hover {
    transform: scale(1.05);
}

button:active {
    transform: scale(0.98);
}