:root{
    --left-bg-color: 255 165 0;
    --right-bg-color: 255 255 254;
    --left-btn-hover-color: orange;
    --right-btn-hover-color: yellow;
    --hover-width: 75%;
    --other-width: 25%;
    --speed: 1000ms;
}

*{box-sizing: border-box;}

body{
    height: 100vh;
    overflow: hidden;
    margin: 0;
}

h1{
    font-size: 4rem;
    color: white;
    position: absolute;
    left: 50%;
    top: 20%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.btn{
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    left: 50%;
    top: 40%;
    transform: translateX(-50%);
    text-decoration: none;
    color: white;
    border: white solid 0.2rem;
    font-size: 1rem;
    font-weight: bold;
    text-transform: uppercase;
    width: 15rem;
    padding: 1.5rem;
}

.split.left .btn:hover{
    background-color: var(--left-btn-hover-color);
    border-color: var(--left-btn-hover-color);
}

.split.right .btn:hover{
    background-color: var(--right-btn-hover-color);
    border-color: var(--right-btn-hover-color);
}

.container{
    position: relative;
    width: 100%;
    height: 100%;
    background-color: cornsilk;
}

.split{
    position: absolute;
    width: 50%;
    height: 100%;
    overflow: hidden;
}

.split.left{
    left: 0;
    background: url('https://cdn.pixabay.com/photo/2017/02/26/12/27/oranges-2100108_1280.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.split.left::before{
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgb(var(--left-bg-color) / 0.7);
}

.split.right{
    right: 0;
    background: url('https://cdn.pixabay.com/photo/2017/02/05/12/31/lemons-2039830_1280.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.split.right::before{
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgb(var(--right-bg-color) / 0.7);
}

.split.left, .split.right, .split.left::before, .split.right::before{
    transition: all var(--speed) ease-in-out;
}

.hover-left .left{
    width: var(--hover-width);
}

.hover-left .right{
    width: var(--other-width);
}

.hover-right .right{
    width: var(--hover-width);
}

.hover-right .left{
    width: var(--other-width);
}