@import url('https://fonts.googleapis.com/css?family=Open+Sans');

* {
    box-sizing: border-box; /*if we add border or padding, it doesn't affect the width of it. */
    margin: 0px;
    padding: 0px;
}

body {
    font-family: 'Open Sans', sans-serif;
    min-height: 100vh;
    overflow: hidden;
}

.slider-container {
    position: relative;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

/* left side */
.left-slide {
    height: 100%;
    width: 35%;
    position: absolute;
    top: 0px;
    left: 0px;
    transition: transform 0.5s ease-in-out;
}

.left-slide > div {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #f3f3f3;
}

.left-slide h1, h2 {
    font-size: 40px;
    margin-bottom: 10px;
    margin-top: -30px;
}

/* right side */
.right-slide {
    height: 100%;
    position: absolute;
    top: 0px;
    left: 35%;
    width: 65%;
    transition: transform 0.5s ease-in-out;
}

.right-slide > div {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    height: 100%;
    width: 100%;
}

/* buttons */
button {
    background-color: #fff;
    color: #aaa;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 15px;
}

button:hover {
    color: #222;
}

button:focus {
    outline: none;
}

.slider-container .action-buttons button {
    position: absolute;
    left: 35%;
    top: 50%;
    z-index: 2;
}

.slider-container .action-buttons .down-button {
    transform: translateX(-100%);
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
}

.slider-container .action-buttons .up-button {
    transform: translateY(-100%);
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
}