*, *::before, *::after {
    box-sizing: border-box;
}

html, body, .outer-div {
    height: 100%;
    margin: 0;
    padding: 0;
    font-size: 20px;
}

body{
    color: white;
}

h2 {
    color: black;
}

.outer-div {
    background-color: #6c7575;
    cursor: pointer;
    padding: 100px;
}

.inner-div {
    height: 60%;
    background-color: #e1f5f4;
    padding:100px;
    margin: 20px;
    color: #6c7575;
}

.button {
    background-color: #6c7575;
    color: white;
    padding: 20px;
    margin: 100px;
}