.slider-wrap {
position: relative;
margin: 50px auto;
width: 700px;
}
.slider {
position: relative;
width: 620px;
margin: auto;
margin-top:-50px;
}


.slider-arrow {
position: absolute;
top: 80px;
width: 20px;
height: 20px;
background: black;
color: #fff;
text-align: center;
text-decoration: none;
border-radius: 50%;
}
.sa-left {
left: 10px;
}
.sa-right {
right: 10px;
}
.black {
background: black;
}
.red {
background: red;
}
.green {
background: green;
}
.blue {
background: blue;
}
.yellow {
background: yellow;
}