styles.css

body,#slider,.wrap,.slide-content{
    margin:0;
    padding:0;
    font-family:Arial,Helvetica,sans-serif;
    width:100%;
    height:100vh;
    overflow-x:hidden;
}

.warp{position:relativell}

.slide{
    background-size: cover;
    background-position: center;
    background:no-repeat;
}

.slide1{background-image: url('images/img1.jpg')}
.slide2{background-image: url('images/img2.jpg')}
.slide3{background-image: url('images/img3.jpg')}

.slide-content{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.slide-content span{
    font-size: 5rem;
    color:#fff;
}
.arrow{
    cursor:pointer;
    position:absolute;
    top: 50%;
    margin-top:-5%;
    width: 0;
    height: 0;
    border-style: solid;
}

#arrow-left{
    border-width:30px 40px 30px 0;
    border-color: transparent #fff transparent transparent;
    left:0;
    margin-left:30px;
}
#arrow-right{
    border-width: 30px 0 30px 40px;
    border-color: transparent transparent transparent #fff;
    right:0;
    margin-right: 30px
}
footer{
    text-align: center;
    background-color: peru;
}