.slider {
width: 100%;
display: flex;
justify-content: center;
overflow:hidden;
}
или
.slider-wrapper {
overflow:hidden;
max-width: 800px;
width: 100%;
height: 120px;
position: relative;
box-shadow: 10px 10px 44px -10px rgba(0,0,0,0.75);
}