*{
    padding: 0;
    margin: 0;
}
main{
    display: flex;
    justify-content: space-between;
    height: 100vh;
    position: absolute;
}
main>button{
    position: fixed;
    height: 5%;
    top: 5px;
    right: 5px;
}
button{
    cursor: pointer;
}
section{
    height: 100%;
    width: 300px;
    border: 2px solid;
}
section>div{
    display: flex;
    justify-content: space-between;
    padding-bottom: 20px;
}