/**{
    box-sizing: border-box;
}
body{
    display: flex;
    min-height: 100vh;
    background: #efc076;
}*/
.container-slider{
    width:100%;
    /*max-width:900px;*/
    margin:auto;
    overflow:hidden;
    box-shadow: 0 0 0 10px #fff,
                0 15px 50px;
    position:relative;
}
.slider{
    display:flex;
    width:400%;
    height:auto;
    margin-left:-100%;
}
.slider__section{
    width:100%;
}
.slider__img{
    display:block;
    width:100%;
    height:100%;
    object-fit:cover;
}
.slider__btn{
    position:absolute;
    width:40px;
    height:40px;
    background:rgba(255,255,255,.7);
    top:50%;
    transform: translateY(-50%);
    font-size:30px;
    font-weight: bold;
    font-family:monospace;
    text-align:center;
    border-radius:50%;
    cursor:pointer;
}
.slider__btn:hover{
    background:#fff;
}
.slider__btn--left{
    left:10px
}
.slider__btn--right{
    right:10px;
}