* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    height: 100vh;
    font-size: 16px;
    font-family: Poppins, sans-serif;
    overflow: hidden !important;
    background: #fff;
}

section {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background: #fff;
}

.white {
    height: 100%;
    width: 50%;
    background: #fff;
    color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.white h1 {
    position: relative;
    left: 50%;
    mix-blend-mode: difference;
	user-select: none;
}

.black {
    height: 100%;
    width: 50%;
    background: #000;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}

.black h1 {
    position: relative;
    left: -50%;
    mix-blend-mode: difference;
	user-select: none;
}

section h1 {
    position: absolute;
    font-size: 22em;
    display: flex;
}

.black h1 span {
    color: white;
}

.white h1 span {
	color: transparent;
}

#pointer {
    position: absolute;
    z-index: 5;
    width: 400px;
    height: 400px;
    background: #fff;
    border-radius: 50%;
    pointer-events: none;
    mix-blend-mode: difference;
}

@media (max-width: 768px) {
    section h1 {
        font-size: 10em;
    }

    #pointer {
        width: 150px;
        height: 150px;
    }
}