* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #121212;
    color: #e3e3e3;
    width: 100%;
    height: 100vh;
}

.title {
    text-align: center;
    padding: 10rem 0;
    text-transform: capitalize;
}

/* Absolute centering */
.container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.bar-1, .bar-2, .bar-3 {
    background-color: #e3e3e3;
    width: 5rem;
    height: .7rem;
    margin: .7rem 0;
    transition: 0.35s;
}

.change .bar-1 {
    transform: translate(0, 1.4rem) rotate(45deg);
}

.change .bar-2 {
    opacity: 0;
}

.change .bar-3 {
    transform: translate(0, -1.4rem) rotate(-45deg);
}