*{
    box-sizing:border-box;
}

.container_slider{
width: 100%;
max-width: 100%;;
margin: auto;
overflow: hidden;
box-shadow: 0 0 0 5px black;
position: relative;
}

.slider{
display: contents;
width: 100%;
height: 100%;
margin-left: -100%;
}

.slider_section{
width: 100%;
}
.slider_img{
display: block;
width: 100%;
height: 100%;

}
.slider_btn{
 position: absolute;
 width: 40px;
 height: 40px;
 background: black;
 color: white;
 top: 50%;
 transform: translateY(-50%);
 font-size: 30px;
 font-weight: bold;
 font-family: monospace;
 border-radius: 50%;
 text-align: center;
 cursor: pointer;
 opacity: 70%;

}
.slider_btn:hover{
 background: cadetblue;
}
.slider_btn_left{
  left: 10px;
}
.slider_btn_rigth{
right: 10px;
}