.slide{width: 100%; overflow:hidden; position: relative;}
    .slide ul{width:calc(100% * 4); display:flex; transition:1s;} /* slide를 30초동안 진행하며 무한반복 함 */

    .slide li{
        width:calc(100% / 4);
        height:300px;
        width: 100%;
        height: 600px;
        background-size: cover;
	    background-position: center;
}
    .slide li:nth-child(1){background-image: url(../img/main/main_slide01.png);}
    .slide li:nth-child(2){background-image: url(../img/main/main_slide02.png);}
    @keyframes slide {
      0% {margin-left:0;} /* 0 ~ 10  : 정지 */
      10% {margin-left:0;} /* 10 ~ 25 : 변이 */
      25% {margin-left:-100%;} /* 25 ~ 35 : 정지 */
      35% {margin-left:-100%;} /* 35 ~ 50 : 변이 */
      50% {margin-left:-200%;}
      60% {margin-left:-200%;}
      75% {margin-left:-300%;}
      85% {margin-left:-300%;}
      100% {margin-left:0;}
    }

    .slide input{display:none;}
    .slide .bullet{position:absolute; bottom:40px; left:0; right:0; text-align:center; z-index:10;}
    .slide .bullet label{width:10px; height:10px; border-radius:10px; margin: 0 3px; display:inline-block; background:#fff; font-size:0; transition:0.5s; cursor:pointer;}


/* 슬라이드 조작 */
    #pos1:checked ~ ul{margin-left:0;}
    #pos2:checked ~ ul{margin-left:-100%;}
    #pos3:checked ~ ul{margin-left:-200%;}
    #pos4:checked ~ ul{margin-left:-300%;}


/* bullet 조작 */
    #pos1:checked ~ .bullet label:nth-child(1),
    #pos2:checked ~ .bullet label:nth-child(2),
    #pos3:checked ~ .bullet label:nth-child(3),
    #pos4:checked ~ .bullet label:nth-child(4){background:#666;}


/* 슬라이드 조작 버튼*/
.slide i.fa-angle-left, .slide i.fa-angle-right{
    display: inline-block;
    font-size: 44px;
    color: #fff;
    position: absolute;
    top: 50%; transform:translateY(-50%);
    cursor: pointer;
}
.slide i.fa-angle-left{left: 3%;}
.slide i.fa-angle-right{right: 3%;}

.slide i.fa-angle-right:checked ~ ul{margin-left:-100%;}


/*1080 이하일 때 적용되는 스타일*/
@media screen and (max-width:1080px){
    .slide li{height: 500px;}
}

/*780 이하일 때 적용되는 스타일*/
@media screen and (max-width:780px){
    .slide li{height: 400px;}
}