What should be changed in the layout of the slider?

Question

css

Hello. The question is the following, you need to make the slider 1366 by 585px. When I set these dimensions, a scroll appears from the bottom. How can you pick it up?

<div class="slider">
            <div class="sliderContent">
                <div class="item">
                    <img src="img/slider/slider1.jpg" alt="" />
                </div>
                <div class="item">
                    <img src="img/slider/slider2.jpg" alt="" />
                </div>
                 <div class="item">
                    <img src="img/slider/slider3.jpg" alt="" />
                </div>
            </div>
        </div>

.slider {
float:left;
width:1366px;
height:585px;
position:relative;

}

.sliderContent {
float:left;
width:1366px;
height:585px;
clear:both;
position:relative;
overflow:hidden;
}

.sliderArrows a {
display:block;
text-indent:-9999px;
outline:none;
z-index:50;
background-image:url(../gfx/prev_next.png);
width:42px;
height:42px;
position:absolute;
top:50%;
margin-top:-34px;
}

.prev {
background-position:0 0;
left:15px;
}

.prev:hover {
background-position:0 -44px;
}

.next {
right:15px;
background-position:-44px 0;
}

.next:hover {
background-position:-44px -44px;
}

.sliderContent .item {
position:absolute;
width:1366px;
height:585px;
background:#fff;
}

.sliderBullets {
position:absolute;
bottom:0;
left:50%;
z-index:50;
margin-left:-45px;
}

.sliderBullets a {
display:block;
float:left;
text-indent:-9999px;
outline:none;
margin-left:5px;
width:10px;
height:11px;
background:url(../gfx/bullets.png) no-repeat;
}

.sliderBullets .active {
background-position:0 -11px;
}

.sliderContent a {
outline:none;
}

a {
color:#fff;
}

a img {
border:none;
}

Answer 1

.slider{
overflow-x:hidden;
}
for the future - shove the code on the codepen