@charset "utf-8";

body {
    /*
    display: flex;
	align-items: center;
	justify-content: center;
	height: 100vh;
*/
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.ham_btn {
    position: relative;
    width: 45px;
    height: 34px;
    transition: 0.3s; 
}

.ham_btn span {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #666;
    transition: 0.3s ease-in-out;
}

.ham_btn span:nth-child(1) {
    top: 0;
}

.ham_btn span:nth-child(2),
.ham_btn span:nth-child(3) {
    top: 13px;
}

.ham_btn span:nth-child(4) {
    top: 26px;
}


/*active 클래스 발생*/

.ham_btn.active span:nth-child(1),
.ham_btn.active span:nth-child(4){
    opacity: 0;
}

.ham_btn.active span:nth-child(2){
    transform: rotate(45deg);
}
.ham_btn.active span:nth-child(3){
    transform: rotate(-45deg);
}