.frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-top: -200px;
    margin-left: -200px;
    border-radius: 2px;
    box-shadow: 4px 8px 16px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
    background: salmon;
    color: #333;
    font-family: 'Open Sans', Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.hamburger {
    position: relative;
    cursor: pointer;
}

.bar {
    position: relative;
    display: block;
    background: #fff;
    margin-bottom: 20px;
    width: 70px;
    height: 5px;
    border-radius: 10px;
    box-shadow: 4px 8px 16px 0 rgba(0,0,0,0.5);
    transition: all 0.5s
}

.hamburger:hover {
    opacity: 0.7;
    transition: all 0.6s
}

.one {
    margin-bottom: 0;
}

.two {
    visibility: hidden;
    transition: all 0.2s
}

.three {
    margin-top: -30px;
}

.one-rotate {
    transform: rotate(-135deg);
}

.three-rotate {
    transform: rotate(135deg);
}