@import url("https://fonts.googleapis.com/css2?family=Roboto:ital@0;1&display=swap");

:root {
  --font1: "Roboto", sans-serif;
  --col1: #111;
  --col2: #333;
  --col7: #999;
  --col3: #fff;
  --col4: #808080;
  --col5: #99a3a3;
  --col6: #ffc0cb;
  --letterSpacing: 0.7px;
}

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

body {
  background-color: var(--col5);
  font-family: var(--font1);
}

/* PAGE CONTENT: START */
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

h1 {
  color: var(--col1);
  font-size: 30px;
  margin: 30px auto;
}

.box {
  background-color: var(--col4);
  color: var(--col5);
  font-size: 72px;
  height: 600px;
  width: 600px;
  line-height: 600px;
  text-align: center;
  margin-bottom: 20px;
} /* PAGE CONTENT: END */

/* HAMBURGER ICON: START */
.menu-toggle {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 18px;
  background-color: var(--col7);
  color: var(--col1);
  padding: 12px 16px;
  cursor: pointer;
  z-index: 1000;
  transition: color 0.7s ease;
} /* HAMBURGER ICON: END */

.menu-toggle:hover {
  background-color: #999;
}

/* MENU CONTENT: START */
.sliding-menu {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100%;
  background-color: var(--col2);
  color: var(--col3);
  padding: 20px 40px 20px 20px;
  transition: right 0.3s ease;
  overflow-y: scroll;
  -ms-overflow-style: none;
  /* Hide scrollbar for Chrome, Safari and Opera */
  scrollbar-width: none;
}

/* Hide scrollbar for IE, Edge and Firefox */
.sliding-menu::-webkit-scrollbar {
  display: none;
}

.sliding-menu.active {
  right: 0;
}

.sliding-menu h2 {
  color: var(--col6);
  font-size: 20px;
  margin: 10px 0 20px 0;
}

.optionHeading {
  color: #ccc;
  font-size: 16px;
  letter-spacing: var(--letterSpacing);
}

.sliding-menu p {
  font-size: 14px;
  letter-spacing: var(--letterSpacing);
  margin: 2px 0 20px 0;
} /* MENU CONTENT: END */

/* MEDIA QUERIES */
@media only screen and (max-width: 680px) {
  .box {
    height: 400px;
    width: 400px;
    line-height: 400px;
  }
}

@media only screen and (max-width: 450px) {
  h1 {
    text-align: center;
    margin: 40px 0 20px 0;
  }

  .menu-toggle {
    font-size: 16px;
    padding: 8px 17px;
  }

  .box {
    height: 200px;
    width: 200px;
    line-height: 200px;
  }
}

@media only screen and (max-width: 300px) {
  .sliding-menu {
    right: -220px;
    width: 220px;
  }
}