@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');

* {
    box-sizing: border-box; /*if we add border or padding,
    it doesn't affect the width of it. */
}
body {
    font-family: 'Lato', sans-serif;
    background-color: #333;
    color: #222; /*font color*/
    overflow-x: hidden; /*hide overflow in x-axis*/
    margin: 0;
}

/* container -> circle & content */

.container {
    background-color: #fafafa;
    /* move from a position, here top left */
    transform-origin: top left;
    /* delay in a style, here transform */
    transition: transform 0.5s linear;
    width: 100vw;
    min-height: 100vh; /*view port*/
    padding: 50px;
}

.container.show-nav { 
    /* rotate the container by 20deg from the origin */
    transform: rotate(-20deg);
}

/* circle  */

.circle-container {
    /* fix the circle container to the point away from viewport */
    /* we should fix it in front of eye when we are styling it */
    position: fixed; /*fixed wrt viewport*/
    top: -100px; /*can be 200px at the time of making*/
    left: -100px; /*can be 200px at the time of making*/
}

.circle {
    background-color: #ff7979;
    /* circle's dimension */
    height: 200px;
    width: 200px;
    border-radius: 50%;
    position: relative; 
    /*this is relative so the button inside it will be absolute*/
    transition: transform 0.5s linear;
}

.container.show-nav .circle {
    /* rotate the circle 160deg. This come from hit and trial */
    transform: rotate(-160deg);
}

.circle button {
    cursor: pointer;
    position: absolute;
    /*position relative to the nearest positioned ancestor*/
    top: 50%;
    left: 50%;
    height: 100px;
    background: transparent;
    border: 0;
    font-size: 26px;
    color: #fff;
}

.circle button:focus {
    /* outline is line drawn outside border */
    outline: none;
}

/* style each button seperately */
.circle button#open {
    left: 60%;
}

.circle button#close {
    top: 20%;
    left: 50%;
    /* as close icon is going to move so to correct it, we rotate it  */
    transform: rotate(90deg);
    transform-origin: top left;
}

/* nav  */

.container.show-nav + nav li {
    transform: translateX(0);
    transition-delay: 0.4s;
}

nav {
    position: fixed;
    bottom: 5px;
    left: 0;
    z-index: 1;
}

nav ul {
    list-style-type: none;
    padding-left: 30px;
}

nav ul li {
    text-transform: uppercase;
    color: #fff;
    margin: 30px 0;
    transform: translateX(-100%);
    transition: transform 0.4s ease-in;
}

nav ul li i {
    font-size: 20px;
    margin-right: 5px;
}

nav ul li + li {
    margin-left: 15px;
    transform: translateX(-150%);
}

nav ul li + li + li {
    margin-left: 30px;
    transform: translateX(-200%);
}

nav a {
    color: #fafafa;
    text-decoration: none;
    transition: all 0.5s;
}

nav a:hover {
    color: #ff7979;
    font-weight: bold;
}

/* content  */

.content img {
    max-width: 100%;
}

.content {
    max-width: 1000px;
    margin: 50px auto;
}

.content h1 {
    margin: 0;
}

.content small {
    color: #555;
    font-style: italic;
}

.content p {
    color: #333;
    line-height: 1.5;
}